Karie AA

This AA lot was producedby numerous smallholder farmers, all of whom are members of the Rutuma Farmers Cooperative Society (FCS) delivering to KarieCoffee Factory(as washing stations/wet mills are called in Kenya). The factory is located near the town of Karatina, in Kenya’s Nyeri County.


Rutuma FCS is a relatively new entity. The Rutuma FCS Cooperative Society,was established in 1995 after the split of the Mathira FCS, which itself had 11 wet mills. In 2005, Ruthanga, Tumutumu and Marua farmers’ cooperative societies merged and formed Rutuma Amalgamated FCS Limited which was registered on January 5th, 2005. Thevarious societies joining together already had existing community wet mills, which is how (despite its relatively recent birth) the society currently operates seven wetmills–namely, Ruthagati, Karie, Marua, Ngandu, Githima, Kianjogu and Ndurutu–and boasts an overall annual production of around 330 tonnes of green coffee annually.


Karie has 836 registered members, but like many Kenyan coffee factories, only a portion of them actively deliver coffee in any given year. Currently around 800 members actively bring cherry to be processed. Amongst the members are promoter farmerswho are trained to teachsmall scale farmer members Good Agricultural practices (GAPS).This extension service has an immediately positive impact on coffee quality from the mill, asfarmers emerge from trainings with a better understanding of the impact of fertilisation, pruningand quality-driven harvest techniques on the price that their coffee receives at auction and with direct buyers. 


Accordingly, processing at the Karie wet mill adheres to stringent quality-driven methods. All coffee cherries are handpicked and are delivered to the mill the same day, where they undergo meticulous sorting. Factory employees oversee the process and any underripe or damaged cherries will not be accepted by the ‘Cherry Clerk’ –one of the most important harvest-period staff, who keeps meticulous records of how much coffee each producer delivers on any given day (and thus how much payment is due once the coffee has sold).Any rejected coffee will have to be taken home again, and the farmer will need tofind a place to dry it (often a tarp in the yard)to be delivered only at the end of season as low quality ‘Mbuni’ –natural process coffee thatearns a very low price. Thus, farmer members are incentivised to only pick and deliver the ripest cherry that they can.


After being weighed and logged, the weight of the delivery and the farmer’s identification are recorded in the Cherry Clerk’s register and the cherries are introduced into the hopper to be pulped. Pulping will only begin when a sufficient quantity of cherries has been received.


After pulping the cherries are delivered to one of the factory’s fermentation tanks, where it will ferment for between 12 to 48 hours depending on the ambient temperature at the time. After this, the coffee is fully washed to remove all traces of mucilage, during which time it will be graded. The coffee will then either be delivered to dry on the factory’s raised drying beds or will be soakedunder circulating water for up to 24 hours, depending on if there is room on the factory’s beds (during the peak of the season, there is often a backlog). The coffee will dry here slowly over the course of 2 to 3 weeks, during which time it will be turned regularly and covered during the hottest part of the day. 


Rutuma is managed by a board of 7 members; each one is elected and will represent one of the seven wet mills. Rutuma also employs a Secretary Manager who oversees its permanent staff members, as well as the day to day running of the Coop.


Coffee farming in Nyerigoes back far into Kenya’s colonial past, but many members of the Cooperative still rely on additional economic and agricultural activities for their livelihoods. In addition to producing coffee, most farmers in the area also produce tea, maize and legumes for sale at local markets and for their own tables. 


Some of the issues that farmers face are low production due to pests and diseases and the relatively high cost of inputscompared to income from coffee.Many cannot afford to plant disease resistant varieties and face being priced out of the market as their yields diminish.The cooperative has undertaken actions to increase yields and improve their member’s livelihoods. By paying the producers some of the highest returns for their coffee thisobjective can be achieved.


Tasting Notes:  Rasberry, Lemonade, Juicy


Country Kenya
Region Nyeri County, Central Kenya
Farm Rutuma Farmers Co-Operative Society
Variety SL 28, SL34, Ruiru 11 & Batian
Proc. Method Washed
Altitude Approx. 1,900 metres above sea level
Farm Size Less than 1 hectare on average



Karie AA