Wahundura is a washing station – or factory, as they are called in Kenya – built in the 1960s and located in Murang’a County in Kenya’s former Central Province. It is one of four active washing stations – along with its sisters Kagumoini, Riakiberu and Karugiro – owned by the Kamachiria Coffee Farmer’s Cooperative Society (FCS). Kamachiria is made up of over 5,600 producers who farm in Kenya’s central highlands.


Wahundura receives coffee cherries from local members of the cooperative who grow coffee trees on nearby farms, located between 1750-1850 meters above sea level. The factory is managed by Catharine Wahu – the only female factory manager in the Kamachiria FCS – who oversees the collection and careful processing of the coffee cherries. Besides Catharine, Wahundura employs five permanent staff members from the local communities and an additional five or six workers during the season.




Kenya uses a grading system for all its exportable coffee lots. The grading system is based on the size and assumed quality of the bean. A coffee’s grade is directly correlated with the price it attracts at auction or through direct trade.


This coffee is AA grade. This grade relates to the size (in this case, AA means that the beans are screen size 18 and above). More AA grade coffee is found in Central Kenya than anywhere else in the country, thanks to the high altitudes which allow for greater late yields. These later yield cherries have the benefit of better weather, with optimum sunshine and a longer period for the sugars to develop and when they are finally picked, they are on average fuller, redder and heavier than cherries grown in other areas.




All the coffee cherry is hand-picked and delivered on the same day to the washing station, where it undergoes meticulous sorting. This is also done by hand and is overseen by a ‘cherry clerk’ who ensures any unripe and damaged cherries are removed. The ripe cherry is then digitally weighed and recorded, and the farmer receives a receipt of delivery.


The coffee is then placed in a receiving tank and pulped using a pulping machine to remove the skin and fruit from the inner parchment layer that protects the green coffee bean. After being pulped, the coffee is sorted by weight using water, with the highest quality and densest beans being separated out from the lighter, lower-quality beans.

The coffee is then dry fermented for 8 hours, to break down the sugars and remove the mucilage (sticky fruit covering) from the outside of the beans. Whilst the coffee is fermenting it is checked intermittently and when it is ready it is rinsed and removed from the tanks and placed in a washing channel.


The parchment-covered coffee is then washed with fresh water from the nearby Rwarai and Gatura Rivers and sent through water channels for grading by weight. The heavier coffee, which sinks, is considered the higher quality, sweeter coffee, and any lighter density or lower grade coffee beans are removed. The beans are then sent to soaking tanks where they sit underwater for a further 12 hours. This process increases the proteins and amino acids, which in turn heightens the complexity of the acidity.


After soaking, the coffee is pumped onto deep drying beds where they drain for 1-2 hours, before being transferred to raised drying tables (also known as African beds). As they dry the parchment is turned constantly to ensure even drying, and so that any defective beans can be identified and removed. Time on the drying tables depends on the weather, ambient temperature and processing volume: taking anywhere from one to two weeks to get to the target moisture of 11–12%. After drying the coffee is moved to conditioning beds, where it rests in parchment for about a month. This resting period helps to stabilise water activity and contributes to long-lasting quality and vibrancy in the cup.


Once the coffee is ready it is transported to Kahawa Bora Mill (“good coffee mill”) to be dry milled and prepared for shipping. Kahawa Bora is located in Thika, about 1hrs drive from Nairobi.




Certified good. 


“What is it? We made it up. Why? We wanted to explain why we buy and roast the coffees we do. Certifications are not bad, but in themselves not always the reason we buy coffee. So what makes good coffee? Flavour, sustainability, relationships, trust. Just because a producer doesn't have organic certification doesn't mean they aren’t using the best practices for their farm. A relationship with them says more than a stamp can. We trust our relationships, whether direct or through a coffee merchant, and ask you to trust us to buy and roast “good” coffee”.


Sundays sums it up as, good taste, good people, good times.


Sundays aim is to - 


  • Build strong relationships that positively affect people's lives. 
  • Develop uncompromising quality in every aspect of their business. 
  • Keep integrity throughout. 

    Coffee should be enjoyable and we are all about making it that.