Kenya Twin River


Grind * 

Whole beans by default, or please specify how you want us to grind your beans.



Origin  Thika, Kiambu County
Owner  John Mbuthia Kamau
Altitude  1,500-1,650 masl
SL28, SL34 & Ruiru 11
fully washed & sun-dried on raised beds

Acidity  mulberry, balanced
Body  big juicy
Roast  medium
Brewing  extremely versatile – we love it every which way!

Our single origin coffees are all packed into 250g bags straight from the roaster. For optimal freshness, if you select 1kg of a single-origin coffee, it will be shipped as 4x250g bags.  
Our blends and decaf are packed into both 250g and 1kg bags. 

Kenya Twin River

This exceptional AA lot was produced at the Twin River Estate, near the town of Thika in Kenya’s Kiambu County. The land surrounding Kiambu is blessed with deep red volcanic soils, rich in organic matter and perfect for coffee farming; making it possible for the farm’s 55 hectares to produce 180 MT of cherries annually. The locals call the Chania the “chocolate river” because when it rains it looks like molten milk chocolate (from Michael a longstanding Origin regular who grew up on Gethumbwini estate nearby…)

The Estate

Situated near Nairobi and to the South of the Aberdare ranges and Mt. Kenya, Twin River Estate takes its name from the two rivers that provide its life force: the rivers Thika and Chania. Thika, the larger of the two, marks the boundary between the counties of Muranga and Kiambu. The river also provides a substantial amount of hydroelectric power for Kenya, as well as most of the water supplies for Nairobi and of course the Twin River Estate.


Processing at the Twin River Estate 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 (as washing stations/wet mills are called in Kenya) employees oversee the process, making sure that any under-ripe or damaged cherries will not be accepted. After being weighed and logged the cherries are introduced into the hopper to be pulped. Pulping will only begin when a sufficient quantity of cherries has been received.

Once the coffee has been pulped, beans are fully washed using clean river water from Thika to remove all traces of mucilage, during which time it will be graded. Next, the coffee will be delivered to dry on the factory’s raised drying beds. The coffee will dry here slowly over 2 to 3 weeks, during which time it will be turned regularly and covered during the hottest part of the day. Finally, the dried coffee is taken to the dry mill for secondary processing. Here, coffee is hulled and graded by size and density, before being rebagged ready for export.


Some of the issues that farmers face are low production due to pests and diseases and the relatively high cost of inputs compared to income from coffee. Many cannot afford to plant disease-resistant varieties and face being priced out of the market as their yields diminish. Twin River Estate is one of many farms feeling the strain of these factors. As profit continues to diminish, it is highly likely that Twin River will be another fantastic coffee estate lost to the real-estate developers, encroaching from the outskirts of Nairobi.

One of Kenya’s newest but most dangerous threats is that of climate change. Due to the nation’s geographical location in relevance to the equator, Kenya is lucky to receive two crops per year. Traditionally, the main harvest is carried out in October through to December, with the fly crop in June through to August producing minimal quantities. However, recent issues caused by the changing climate have meant lower yields during the main harvest, and more quantity being produced in the fly crop. This provides strain on producers, whose yearly income and crop cycles are affected by this change.

Screen sizing in Kenya

The AA, AB and other grades used to classify lots in Kenya are an indication of screen size only. They are not an indication of cup quality. The AA grade in Kenya is equivalent to screen size 17 or 18 (17/64 or 18/64 of an inch) used at other origins. AA grades often command higher prices at auction though this grade is no indication of cup quality and an AB lot from a better farm may cup better. PB (denoting Peaberry) is the smallest screen size.