Earlier this past summer, Grant Gamble of Culture Coffee Project reached out to us asking if we would like to contribute to a new project that he had somewhat recently launched with Suneal Pabari. Seasoned pros, Grant has put on countless well-known and well-attended coffee events, and Suneal is one of the founders of The Roasters Pack. Fittingly, their brainchild, Leaderboard Coffee, is a coffee subscription- of sorts. Yes, it is a curated selection of ten unlabelled (intended to be tasted blind) coffees you receive in the mail, but Leaderboard has the look and feel of a coffee event- a really fun and educational one at that.
Designed for both coffee enthusiasts and coffee professionals, Leaderboard, “…believe[s] that learning about coffee should be fun, not intimidating.” While receiving ten unlabelled coffees to taste side-by-side is a hugely educational process in itself, Suneal and Grant have gone even further. Firstly, they have created a quiz that has an interface based on the concept of a “real-life-video-game,” and secondly, they have connected with coffee professionals around the globe to create content that helps the players of Leaderboard better identify the coffees they are tasting.
“…learning about coffee should be fun, not intimidating.”
It was for this reason that Grant reached out to us. Ben Carlson, co-founder of Long Miles, along with David Stallings, who handles Roaster Relations for Long Miles, together created a thirty-three minute long video for Leaderboard. In the video, Ben dives into the history of coffee production in Burundi, and David talks about tasting coffees from the Great Lakes region of East Africa, generally and Burundi coffee, more specifically.
Watch the video below, and definitely check out Leaderboard! If you are interested in expanding your coffee palate and learning more about coffee producing countries, processing methods, coffee varieties, and more, Leaderboard is an amazing and fun resource!
Asterie has been a part of the Long Miles Coffee team since 2016. She first joined as a Coffee Scout, and six years later is leading the Heza Coffee Scout team.
What is your earliest memory of coffee?
My earliest memory is the joy that I experienced when I got a job in coffee. I grew up hearing that it’s not “normal” for a woman to work in the coffee sector, and that coffee is for men.
How did you get involved in coffee?
I started working in the coffee sector in 2016. At the time, Long Miles was looking for people to join their team of Coffee Scouts. I wrote a test, and came out on top. I was a Coffee Scouts for two years, and was then promoted as a supervisor of the Coffee Scouts.
What is your role in the coffee supply chain?
My job is to plan and supervise all of the Coffee Scout’s activities that are happening on the coffee farms. I spend all of my time with the team of Coffee Scouts and partnering farmers.
What does a ‘’typical day’’ look like for you?
As a mother, the first thing that I do every day is spending time with my children and feeding them. Then I go to work, and after work I have to prepare supper and spend time with my children.
Asterie with the Heza Coffee Scouts
What does working in coffee mean to you?
To me, it means that coffee is for everyone- it’s not just limited to men.
Are there any challenges that exclude women from working in coffee?
In Burundi, men often have the interpretation that women are not able, but we are able. One challenge is that during coffee harvest the team work longer hours than off-season, which is not possible for women living upcountry. We’re still caught up in a kind of “prison culture”. A woman living outside of the city is still expected to harvest crops and prepare meals, even if her husband is around. If you’re out of your house after 7pm, you can be considered as a woman who “took the place of a man” in the house. When we work less hours than men, it doesn’t mean that we’re not able but have to continue with other activities at home.
When you consider the coffee industry, do you think that women are empowered to be in leadership and decision-making roles?
Yes. At Long Miles, women are represented but when I look around my neighborhood, women are considered as people of the kitchen or valleys (where people have to look for food). Coffee is considered to be a crop for men because it brings money, and where there is money there is a place for decision-making…and women aren’t considered able to make these kinds of decisions.
What does gender equity in coffee look like?
This is hard for me to say because I’ve never worked for anyone other than Long Miles. The only thing that I can say is that gender equality looks like women being represented in every team. If you compare the number of men and women working in coffee, men outnumber women. I think this happens because when companies are looking for workers, women are often busy with other work so they miss out on the information but the men are always there.
Is there anyone in the coffee industry who inspires you?
I don’t know, I haven’t thought about it.
Is there anything that you would like to learn or do to further your understanding of coffee?
I have learned many things about how to take care of coffee farms, and I know a bit about cherry processing but I still want to learn more about processing parchment coffee.
Bernadette pruning the coffee trees on her family’s farm.
Bernadette is a partner coffee farmer from Munyinya hill in Burundi. She is also a member of the Kerebuka Coffee Association that encourages women involved in coffee to know their value. Her earliest memory of coffee was planting it together with husband just after they got married, to help raise their family.
What is your role in the coffee supply chain?
I am a coffee farmer.
What does a ‘’typical day’’ look like for you?
I spend my time doing farm work on our family’s land, and looking for food. I was also chosen by the government agronomists to supervise the agricultural activities happening on Munyinya hill.
Are there any challenges that exclude women from working in coffee?
From my experience, men often minimize a woman’s value. They say that we’re not able and we just accept that. We know that we are able, but the problem is that we’re scared to show our capacity. In Burundi, women have to wait for the men in our families to make the decisions. This is one of the reasons why I encourage women living on Munyinya hill to go to school. People who go to school have confidence.
An example that I can share is that some women in our association have had the courage to ask their husbands for their own coffee farms so that they can earn their own money. By doing this, they don’t have to rely on their husbands when deciding how this money should be spent. Unfortunately, some of these women still have to wait for their husbands to decide how to use their money.
What does gender equity in coffee look like?
The number of women in coffee is limited, and this needs to change for there to be gender equity in coffee.
Is there anything that you would like to learn or do to further your understanding of coffee?
No, I’m getting too old. I don’t need to learn more things.
A conversation with Long Miles co-founder, Ben Carlson.
It’s always been our vision to be transparent about coffee harvest and production in Burundi. While our mantra is to hold on to hope despite any challenges we might face, the realities of this year’s coffee harvest has stretched our team and the coffee communities that we work with.
Why was coffee harvest in Burundi small this year?
BC: It’s a complex answer. Like our friend and former Managing Director, Lauren Kagori (née Rosenberg) likes to say, “In Burundi, simple is complex and complex is simple.” Overall, there are four things that I would say contributed to the size of Burundi’s harvest this year.
Soil health. The World Bank recently released a report focused on unpacking climate fragility in Burundi. According to their research, Burundi loses almost 38 million tons of soil and 4% of its gross domestic product to land degradation every year. Half of the households in the country depend on coffee for their livelihoods. The coffee sector alone brings in 90% of the country’s foreign revenue, but over the last forty years severe soil erosion has led to a two-thirds decrease in coffee production, pushing millions back into poverty;
Fertilizer. We can’t access fertilizer in the country, and it’s illegal to purchase it outside of Burundi. You can only purchase fertilizer from one semi-privatized company in Burundi, but they don’t produce a fertilizer meant for coffee. Usually, we have to place an order for and purchase fertilizer through Burundi’s national coffee board, ODECA (translated from French as “Coffee Development Office”). From our experience, the delivery of fertilizer is always delayed and never available in the quantities that we need;
Rain. It’s apparent and out of our control. The rainy season in Burundi typically runs from the end of March/beginning of April through May, but over the last three years the rains have stopped just before May. If we had healthy soil and fertilizer, the rain could have stopped and the impact on the coffee crop might have gone unnoticed;
Old coffee trees. A majority of the coffee trees in Burundi were planted between the 1930s and 1960s under Belgian colonial rule. The newest coffee trees were most likely planted in the 1980s. We’re talking about coffee trees that are about forty-years old! Generally speaking, coffee trees should be replaced every fifteen to twenty years. When we introduced our inaugural pruning campaign and encouraged partner coffee farmers to stump their older coffee trees, it was incredibly difficult to get them on board. It still is! Up until that point, stumping coffee trees was unheard of.
“In Burundi, simple is complex and complex is simple.”
What did we expect this coffee harvest, and what did we actually get?
BC: We expected 1.2 million kgs of harvested cherry. The reality is that we might have reached 500,000 kgs. That’s less than 50% of our expected production, which means 50% less revenue for the farming communities that we work with. Added to this, we’re coming off the back-end of a low harvest in 2020 which means that coffee farmers in Burundi should have experienced a peak in production this year. This all goes back to cyclicity. In 2019, we hit 20% of our average production. In 2020, we hit 50%. This year, the country as a whole hit between 40-45% of its average production.
We were hoping to do more controlled (anaerobic-styled) fermentations using our newly shipped Jacky Bin technology, which we’ve ended up doing but not in the quantity that we expected. With shipping delayed worldwide, our Jacky Bins took much longer than expected to get from Australia to the Dar es Salaam port. They then needed to be trucked from Tanzania across the border into Burundi where they took a couple of weeks to clear customs before our team could eventually collect them. Needless to say, the Jacky Bins got to our washing station a few weeks shy of the end of harvest. We missed the mark there, but are excited to grow this side of our coffee production in the future.
Our goal was also to increase the number of coffee farming families that we work with to maximise our impact, but the number of farmers delivering to our washing stations this season has actually declined. Most farmers across the country have produced between 25-40kg of cherries this season. When you’re producing this amount of cherry, it’s not worthwhile processing and delivering to any washing station.
Is this an issue that just Long Miles is facing?
BC:No, this isn’t a Long Miles thing. It’s happening to coffee producers country-wide.
BC:Over the last two years, there’s been a new coffee authority, ODECA, regulating the coffee sector. This kind of turnover happens regularly in Burundi. ODECA has taken over a majority of previously privatized washing stations. With the last three years being low production years, farmers haven’t delivered high yields to their washing stations which means that ODECA hasn’t processed much coffee. Added to this, privately and co-operative owned washing stations were paying a higher price than semi and government-owned washing stations like ODECA’s.
In what we presume is an attempt for them to find more equity, they banned transit centres. This has meant that washing stations have had to collect coffee only from the farmers adjacent to their stations, or those farmers willing to travel further to reach them. In some ways, this is helpful as there’s a better concentration of coffee and farmers who have more direct access to the market.
This is no surprise, but Burundi is a landlocked country. We’ve often faced challenges to get coffee out of the country timely, but in times like these it can take even longer to export coffee. We also can’t dry mill coffee on our own. Applying for a dry mill licence is surrounded by incredible bureaucracy and red tape in Burundi, and there aren’t many options when it comes to where we can mill our coffee. In previous years (this one included), our team has travelled the country looking for options. The dry mill that we’ve previously used is struggling to renew their licence this year, and there are a landslide of challenges that follow suit from this.
“…this isn’t a Long Miles thing. It’s happening to coffee producers country-wide.”
What does all this mean?
BC: This is possibly our best harvest quality in the nine years that we’ve been producing coffee in Burundi. The improved quality of our coffee could be due to the low harvest over the last three years. If you were to draw a comparison between coffee and wine production, this kind of thing sometimes occurs on wine estates that are producing wine from older vineyards. We’re really excited about the coffees that we’ve produced and are working with the same hills, but the reality is that we’ve produced smaller micro-lots this year.
Sourcing coffee is also a unique challenge this year. Previously, we’ve sourced coffees from neighboring producers that have stood out to our team on the cupping table. This year, coffee is limited country-wide so it’s looking like sourcing coffee won’t be possible.
“The sobering reality is that our combined coffee production in 2019, 2020 and 2021 don’t add up to our coffee production in 2018.”
Our team is trying their best to make sure that all our partnering roasters get coffee, but we’re not going to be able to meet everyone’s demands this year and expect to be able to offer less coffee across the board. The sobering reality is that our combined coffee production in 2019, 2020 and 2021 don’t add up to our coffee production in 2018. Knowing the realities of coffee production in Burundi, we’ve recognized the need to be versatile which is one of the reasons why we’re expanding our operations in Kenya and Uganda.
Even thought this year’s coffee harvest has been challenging to navigate, we are incredibly grateful for the coffee communities that we work with and the continued support from our roasting partners across the globe. Thank you. We’re excited to share this year’s coffees with you!
Do you have any questions about this year’s coffee harvest in Burundi? Please get in touch with us!
“I have young sons who must have stolen the camera and taken pictures without me knowing.”
Damien is a seventy-seven-year-old coffee farmer from Nkonge hill in Burundi who seems to carry his walking cane, worn leather hat and good sense of humour everywhere he goes. The last time that Damien held a copy of his photograph was when he applied for his national identity card in the early 1960s.
He waved his cane wildly in the air a couple of times when talking about his photos, laughing at himself when he couldn’t quite make out what he had tried to capture. “I have young sons who must have stolen the camera and taken pictures without me knowing,” he told us while flicking through his stack of printed photos for the first time. Damien comes from a big but tightly-knit family. He has over thirty grandchildren, and the youngest love walking to his house to spend time with their sokuru1.
“In our family, everyone helps with coffee. During the coffee harvest, we all pick our coffee cherries and carry them to the washing station.”
My grandchildren and neighbor’s children. They were playing together, and I asked them to raise their hands so that I could take their photo. I enjoy playing with my grandchildren. They come to my house to play. I can also ask them to help me with things if my wife is not at home, like fetching water.
My house is on the left. These clothes were out to dry. We use tree branches to hang our clothes on.
My grandchildren are in this photo. They were playing with the neighbors’ children when they asked grandpa to take a photo, then others came who also wanted to be in the picture. I enjoy having a big family. We are close and have good relationships.
Beans are very important in Burundi. I think all over the world they are eating beans. We eat more beans than Rwanda.
This cow belongs to my niece. It has its own room in their house. It’s really fat, which pleases me.
My neighbor was sitting in front of his banana trees. He took this position just for the photo.
Footnotes
Sokuru (Kirundi: grandfather)
“Before + Now” is dedicated to bringing the voices of marginalized coffee farmers into the field of vision of everyday coffee consumers. It includes a series of photographs made by coffee farmers in Burundi, East Africa as well as a large-format portrait of each farmer. This series makes it possible not only to see life in East Africa and the coffee process, but also to connect clearly with the dreams, fears, and hopes of coffee farmers. Read more about “Before + Now” here.
We’re often asked the question, “How do I begin working with Long Miles?”
Irrespective of your size or location, the process always begins the same: Talk to us. Whether you are buying one bag or five containers, we want to know you. Few industries are as relational as coffee and we take this element of our industry very seriously – it is our sincerest pleasure to do so. The best way to be in touch is to email David Stallings, who handles Roaster and Importer Relations.
Regardless of where you are located and how much coffee you are looking to source from and/or through Long Miles, our goal is always the same: To interact directly with you and to keep you connected to a transparent and equitable supply chain.
Once you reach out we will schedule a phone/Zoom call or continue the conversation over email, whatever is best for you and the time zones we find ourselves working to reconcile. Together we will discuss your needs in many areas: The types of coffees you are looking for, the volumes of coffees you are looking for, and more. From there we will work together on a plan that works for your business. This can look any number of ways. Typically one of two primary paths will be decided upon:
Roasters purchasing less than a full pallet (ten bags) of coffee from any given origin in any given year are typically referred to our importing partners – more on this below. In most cases and markets, our importing partners take a certain amount of Long Miles coffee into their position specifically with the intention to service our smaller clients. This is not done, by any means, to “hand-off” smaller roasters. In fact, we began operating this way to make sure that our one bag clients were receiving the exact same level of care and attention as our largest clients. As coffee farmers, producers, and exporters, we are not expertly suited to handling sampling and contracts for the smallest of our partners. We remain, however, 100% committed to these partnerships and are available by email, phone, WhatsApp, etc., at any time in order to make sure you have the tools necessary to represent Long Miles coffees in the marketplace. As stated above, regardless of size, we want every partner to be and feel as connected to the supply chain as they wish.
For roasters buying ten+ bags from any given origin each year, you will liaise directly with David for samples, etc. At the appropriate time, David will connect you to our importing partner in your market for contracting, etc.
Once the coffee leaves the country of origin, the primary contact for all things logistics-related will be the importing partner to whom you were introduced by our team. These critical partners will see the coffee safely from port to port, oversee the legal process of getting the coffee into the country/region of delivery, and oversee the logistical process of getting the coffee from the port and into a warehouse. Finally, they will be your primary point of contact for releasing the coffee from the warehouse, paying for the coffee, and seeing that the coffee gets to your business. All of that being said, our team remains at your service throughout the entire process. Whether you have a question about the current state of the coffee or a question surrounding information related to the coffee itself, we are and always will be here for you.
David Stallings, head of Roaster and Importer Relations. Photo by Julianna Stallings.
To better understand why we operate as we do, it may be helpful to note something about who, exactly, Long Miles is. As owners and operators of washing stations in multiple East African nations, we are coffee producers. As owners of farms, we are coffee farmers. We are also coffee exporters. There are other labels that can be applied to Long Miles in East Africa but these are the most important for the sake of this guide.
It may also be helpful to make clear what Long Miles is not. Most notably, Long Miles is not a coffee importer. There are a number of implications associated with this. Firstly, and most importantly, we partner with importers. We are frequently asked questions such as, “Can we buy directly from you and not involve an importer?” The simple answer to that is, “No, that is not possible.” It’s not possible because it’s not legally possible. Unless you live in the country in which the coffee was produced, it must be legally exported by an entity and it must be legally imported by another. There is no way around this. The closest thing that we can do to not involve an importer is to air freight our coffee directly to you. Even then, someone is technically importing the coffee, whether that be your business or a representative you hire. Furthermore, while there are legitimate reasons to occasionally air freight coffee, it is by no means a sustainable approach to coffee logistics – economically or ecologically.
Secondly, the importing partners we work with differ from market to market. We partner with companies based on a certain set of criteria: A general alignment on vision surrounding the purported goals of specialty coffee, the degree to which key roaster partnerships in the market endorse the importer, how expert the importer is in that particular market, how reasonably priced the importer is, etc. No single one of these is the most important factor under consideration. Rather, we weigh each of these points and consider the complete picture. If you are of the size that you are purchasing full or near-full container loads, our logistics team would be more than happy to liaise with an importer of your choice.
The third implication of not being a coffee importer is the fact that we do not typically have an Offer List, nor are we always able to clearly answer questions surrounding the exact final price of any given coffee. We will always be able to tell you the price to purchase the coffee from the country of origin, as this is the price we sell the coffee to importers for. That said, importers provide a service – and no small one at that. Not only are they handling global logistics, they also finance the coffee from the time that it leaves the country of origin to the time your roastery or business takes possession of it. There is a cost associated with shipping, importation, customs clearance, etc., and then the importer also needs to include a margin to cover their own expenses and to make a small profit. On top of all of this, coffee is nearly always bought and sold in U.S. dollars. If your roastery is located somewhere in the world where you will be invoiced in a currency other than USD, then of course the exchange rate and the exact time of the currency exchange needs to be taken into consideration, as well. We do know, generally, the prices charged by our importing partners and will do our best to provide a reasonably accurate quote upon request. Furthermore, we will be more than happy to connect you with our importing partners in order to get an exact logistics quote.
We are writing this post in early June, 2021. The Burundi harvest season is just beginning to ramp up. As such, if you are interested in beginning a relationship with Long Miles Coffee, and particularly if you are interested in purchasing Burundi coffee, now is the ideal time to reach out and make a plan surrounding this harvest.
“I liked seeing other people’s photos and hearing their opinions. Doing that, getting closer as a community, helps us to grow.”
Salvator is a forty-two year old coffee farmer from Gaharo hill in Burundi. He comes from a big family, and is a father to four young children- all of whom he dotes on.“Family is so important to me, especially children. Without them, you cannot be happy.”
During the week, Salvator is not just focused on farming. He is also a member of a Village Savings and Loan Association, the Red Cross, and a traditional brick-making association. It’s not uncommon for people to travel all the way from Bujumbura, the country’s capital city, to the northern province of Muramvya1 to buy the bricks that are made in this region.
“One of the association’s laws is ‘ubuntu’ or humanity. It is important for me to have ubuntu where I live, in my community.”
To have “Ubuntu” is to respect, love and help each other so that we can grow together. In Kirundi (the local language spoken in Burundi) “Ubuntu” refers to the grace and humanity of each person that can be shown to other people. It is a complex term that comes from the Bantu languages mostly spoken in Sub-Saharan Africa. It has many interpretations and definitions, but is commonly translated as, “I am because we are.”
“My mom is on the right with my sister who was carrying a baby. They were preparing traditional banana wine that we were going to give as a gift to a relative who was having a party. This is important to me, because no one can manage to prepare a party alone without the help of family, neighbors, and friends. We also used to prepare the wine to drink at home but now there is a disease that attacks the bananas, turning the plant’s leaves yellow. When one banana is attacked, all the trees in the plantation are infected. I had 23 bananas trees but now I have only 5. This disease has particularly affected Munyinya2 hill where you can only see a desert where there were once bananas plantations…”
“A salon that belongs to my brother-in-law. He promised to teach me how to style hair.”
“Our Village Savings and Loan Association of twenty members from the neighborhood. We meet twice a month, and everyone contributes the money he/she has. We use this money to give loans to the members and they reimburse with interest. After one year everyone receives the amount they contributed, and we share the interests from loans.”
“I am a member of an association called Dufyature turwanye nyakatsi (Kirundi: “Let’s make bricks and fight against houses made entirely of straw”). We make bricks to sell. This man was finalizing our kiln so that we could fire the bricks. After the sale, we keep the capital in the association’s fund, share the profits, and pay communal tax. We manufacture these bricks ourselves without outside labor and we sell them twice a year.”
“The man had just helped this woman putting the bricks down and she was happy because they were heavy and difficult to carry. The people who do this job have to climb over a mountain to carry the bricks from where they are made to the main road. It’s hard work that is done by poor people who don’t have another choice.”
Footnotes
Muramvya is a province in the central part of the country, and also Salvator’s home province.
Munyinya hill is a distinct geo-political region in the Muramvya Province.
“Before + Now” is dedicated to bringing the voices of marginalized coffee farmers into the field of vision of everyday coffee consumers. It includes a series of photographs made by coffee farmers in Burundi, East Africa as well as a large-format portrait of each farmer. This series makes it possible not only to see life in East Africa and the coffee process; but also to connect clearly with the dreams, fears, and hopes of coffee farmers. Read more about “Before + Now” here.
Gervais is a seventy-nine year old coffee farmer from the small, coffee-producing nation of Burundi, East Africa. He started farming coffee in 1960, when Burundi was just two years shy of gaining its independence from Belgian rule. As the oldest person in his community, he has dubbed himself as the “grandfather of Gaharo hill”; the area where he lives and grows his coffee. That, and the fact that his grandchildren seem to follow him wherever he goes.
“My house is close to the road. Children in the community often pass by my home to visit. I am also the oldest person in my community. I am like the grandfather of Gaharo hill.”
Growing up, his father- a traditional beekeeper- taught him how to build a beehive from the wood of the umwungo tree(more commonly known as polyscias fulva, an evergreen indigenous to Burundi). Even though he never became a beekeeper himself, Gervais still grows these trees to sell the wood.
If you ask him, Gervais will tell you that his coffee farm is a source of pride and joy. He used to have just under 300 Heirloom Bourbon coffee trees planted on the same plot of land that his house stands on, but as he’s gotten older, he’s started giving them away to his children. As an avid member of Farmer Field School, Gervais’ coffee farm is a model that other farmers in the community can visit to learn best farming practices from him.
“The governor of Muramvya1 once visited my plantation during a local spraying campaign because it is so nice.”
Over the years, he has planted banana palms, bamboo, and avocado trees alongside his coffee to diversify his farm and protect the soil. At one point, he even started a red wiggler worm farm. More recently, Gervais has started producing organic fertilizer for his coffee trees by composting banana stalks and leaves with ash leftover from cooking.
When we asked Gervais what he’ll do with the photos he took, he replied,
“I am going to show my children the photos I took. I want them to remember that I worked in coffee.”
“This is my grandchild. He always comes with me to my plantation. He follows me, wherever I go. He knows that coffee is important. He knows that if we have coffee, we have rice.”
“I was pruning my trees. I always wear my suit. When I was young, I had many suits. Now, I only have this one.”
“My daughter. She was watering the vegetables outside our house.”
“The women who were sorting coffee at the washing station. I love this washing station. It’s encouraging to see women working in coffee, looking after plantations and earning money.”
Footnotes
Muramvya is a province in the central part of the country, and also Gervais’ home province.
“Before + Now” is dedicated to bringing the voices of marginalized coffee farmers into the field of vision of everyday coffee consumers. It includes a series of photographs made by coffee farmers in Burundi, East Africa as well as a large-format portrait of each farmer. This series makes it possible not only to see life in East Africa and the coffee process; but also to connect clearly with the dreams, fears, and hopes of coffee farmers. Read more about “Before + Now” here.
Fermentation is an incredibly complex process. The purpose of this blog post is not to present an exhaustive scientific perspective on coffee fermentation. We are coffee producers. We are not researchers, nor do we have a background in microbiology. The purpose of this blog post is to address some basic aspects of fermentation, as they pertain to coffee processing. If you are looking for an exhaustive scientific approach, there are people doing great work and research surrounding fermentation and coffee processing. One individual, in particular, that we would recommend checking out is Lucia Solis.
As an industry, we use the term “processing” to refer to the method by which coffee seeds are removed from the fruit in which they developed, in order to prepare them for export. Coffee seeds are, of course, what are colloquially referred to as coffee “beans”. However, they are not beans in any true botanical sense. That is to say, it’s the seeds which we roast, grind, and brew into the decoction known as coffee. In order to separate the seeds from the fruit, and do so in such a way that the seeds are stable and will not encourage microbial growth (bacteria, mold, etc), the seeds must be dried to a certain degree. As such, these are the two primary functions of processing: to dry the coffee to a stable level and to remove the seeds from the fruit.
Washed Processed coffees on drying tables at the Long Miles Coffee Washing Station
There are two broad processing categories under which these goals can be attained (and there are many sub-categories under these broad classifications which we’ll write about another time.) Natural, or Dry Processed, coffees are ones in which the seeds are allowed to dry inside the coffee fruit itself. Not long ago we talked about Naturally Processed coffees on Instagram – you can find that here.
Natural Processing is the original coffee processing method and is well suited to regions with a very dry harvest period. Before export, the dried fruit is broken open (mechanically) and the loosened seeds are sorted out from this. While ostensibly quite simple, producing Naturally Processed coffees in a way that is free from taste defects can be very challenging. This is especially true for producing countries or regions which have a very humid or rainy harvest period. In our experience, Burundi is particularly challenging in this regard. This is because the potential to produce top-quality Naturals is quite high. That said, some harvest seasons can be unpredictably wet, a problem increasingly exacerbated by a shifting climate.
Pulped coffee undergoing the Washed Process
These challenges surrounding drying the coffee without taste defects led to the development of the Wet or Washed Processing method long ago. In the Wet Processed method, the outer skin of the coffee fruit, along with some mucilage, is removed. At this stage, the coffee is fermented in order to remove the remaining mucilage, along with the stubborn pectic layer that surrounds the seeds. As such, when we talk about coffee fermentation, we are referring to a step in the Washed Processing method. After fermentation, these layers are easily washed off, allowing the coffee seeds to be dried. Since the vast majority of the available glucose and fructose is removed through this process, it is much easier to dry the coffee without encountering unwanted microbial activity that may lower the quality of the final product.
Up until fairly recently, this was viewed as the entire scope and purpose of fermentation: to clean the coffee, removing the seeds from the mucilage and pectin inside the coffee fruit. The process was not considered (by most) to impart any positive or even identifying flavors into the final product. In fact, many spoke of the goal of washed coffee in a similar way that some roasters speak of lightly roasting coffee: the process was one in which the goal was simply to add no negative flavors and to let the coffee “speak for itself,” as it were. In fact, the process of fermentation was considered so strictly functional and oblique as it pertains to coffee flavor, that machines were developed to mechanically remove the mucilage from the coffee, without the fermentation step. Carlos H. J. Brando writes in Wintgen’s seminal 2004 book, Coffee: Growing, Processing, Sustainable Production1, that, “although a lot of research work has gone into demonstrating that fermentation and mechanical removal of mucilage lead to the same quality results, some experts are still skeptical.” Elsewhere in Wintgen’s tome is the mechanical removal of mucilage as being able to produce the same quality coffee as traditionally fermented coffee, spoken of as fact.
While it is true that coffee seeds themselves do not actually undergo fermentation (only the mucilaginous material surrounding the seed), there has been a growing movement from researchers indicating that yes, fermentation does affect the flavor of the finished coffee. This has been noted anecdotally by some coffee professionals who have experienced a shift in coffee quality and complexity in production systems that previously employed traditional fermentation and have moved towards mechanical washing that does not require the coffee to be fermented. It has also been examined by individuals such as the aforementioned Lucia Solis.
Members of the Long Miles Coffee team stand alongside a soaking tank with fermenting coffee
Once coffee is pulped and exposed to microbes, these yeasts, bacteria, and fungi eat the glucose and fructose, along with some naturally occurring organic acids, found in the coffee fruit. During this process, fermentation by-products are created. These bi-products can penetrate the coffee seeds, affecting the final cup quality and qualities. Traditionally, the microbes present are naturally occurring and come from the environment – being found in the air, within the fermentation tanks, and also on the coffee fruit itself. In recent years, yeasts have been developed with a specific aim of modulating a coffee’s flavor profile. This is something we experimented with back in 2018 and may explore more in the future.
Even without the addition of selected yeasts, a number of factors can influence fermentation. Chief among these are temperature and the presence (or lack) of water. Warmer environments will speed up the fermentation process whereas cooler environments will draw out the process. It is for this reason that fermentation as a step in processing can never be based purely on a set amount of time. Our own experience fermenting coffee in Burundi these past eight years confirms this. To achieve a fermentation in which all the mucilaginous material has been fermented away can, for example, take eight hours in a warm climate, or thirty-six plus hours in a cooler climate for the exact same lot of coffee. It is true that over time one is able to have a target fermentation time based on the tank size, average temperature, etc. That is to say, with experience specific to any given washing station, one is eventually able to assume target fermentation times. But to enter into a new or unknown system and design a fermentation protocol based on time, rather than observing the process and progress of the fermentation as it is happening, would be putting the cart before the horse.
If the fermentation takes place underwater, the temperature of the fermenting mass is typically cooler than it would be without adding water. As such, this generally slows fermentation down. There is, however, another factor that is more important in influencing the final cup qualities. Coffee that is being fermented underwater is more conducive to bacterial proliferation. Coffee that is fermented dry is more conducive to yeast fermentation (though acetic acid bacteria is present in both circumstances). In our experience, fermentation which happens underwater also has the added benefit of being more homogenous. We can only assume this is because the fermentation bi-products which influence the cup quality are more evenly distributed via the water.
Naturally Processed coffee on drying tables
Though we have discussed fermentation as a step in the Wet or Washed Processing method, it is important to note that fermentation also technically happens in Naturally Processed coffees. Within the skin of the coffee fruit itself, mucilage ferments once the coffee has been removed from the shrub on which it grew. The fermentation process within a Naturally Processed coffee is very likely bacterial as bacteria is significantly smaller than yeasts and, thus, more likely to make its way inside the fruit. This highlights why it is so critical for the initial drying of Naturally Processed coffees to happen quickly. If the coffee is allowed to ferment for too long, the acetic acid bacteria will be able to negatively impact the final cup quality by producing strong acetic acid flavors (think apple cider vinegar). Some acetic acid is always present in coffee and this is a good thing as it can lend a fruited complexity to the final product. But, too much acetic acid leads to off, rotten, or “over fermented” flavors that are eschewed by most specialty coffee professionals and consumers alike.
References
1 Wintgen, J.N. 2012, Coffee: Growing, Processing, Sustainable Production: A Guidebook for Growers, Processors, Traders and Researchers, Second, Revised Edition, Wiley-VCH, Weinheim, Germany.
