Coffee beans pouring through milling machinery
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Where parchment becomes green gold

Kirinyaga County Coffee Mill Ltd — precision milling, grading and cup-profiling under farmer ownership.

01 Who We Are

The future of coffee is with its founders — the farmers

Founded in 1959, Kirinyaga County Cooperative Union Ltd represents 14 primary coffee cooperatives on the fertile southern slopes of Mt. Kenya. We carry the farmer's voice through the entire value chain — milling at Kirinyaga County Coffee Mill Ltd, trading through Kirinyaga Slopes Coffee Brokerage Co. Ltd.

  • /01 Governance vested in farmers via society-appointed directors
  • /02 Quality · Innovation · Integrity · Sustainability (QIIS)
  • /03 Diversified, sustainable coffee-based products & services
Our Full Story
Farmer standing among green coffee plantsStand-in — original KCCU photography to follow
FARMER OWNED · FARMER GOVERNED · SINCE 1959 ·
03 From Cherry to Cup

Nine stages, one chain of custody

Cherry picked on a member’s smallholding reaches the Nairobi Coffee Exchange as a graded, cupped lot. Every step below happens inside the Union — at one of 65 factories, at our mill in Kerugoya, or in our own laboratory.

  1. Members sorting freshly picked red coffee cherry

    Picking

    Members hand-pick only ripe red cherry, garden by garden, through the main crop from October to December.

    Member gardens · 1,400–1,900 m
  2. Cherry being received and sorted at a factory

    Reception

    Cherry is weighed in at the factory the same day it is picked and recorded against the member number.

    Same-day delivery · weighed and recorded
  3. Disc pulping machinery inside a coffee factory

    Pulping

    Disc pulpers strip the skin and separate the cherry into grades by density before fermentation begins.

    Density grading at the pulper
  4. Coffee fermenting in a factory tank

    Fermentation

    Parchment rests in tanks so the mucilage breaks down — the step that sets Kirinyaga acidity.

    Overnight in tank
  5. Workers grading parchment in washing channels

    Washing

    Parchment is washed through grading channels in river water, which separates it once more by density.

    River water · channel graded
  6. Teams turning parchment on raised drying beds

    Drying

    Parchment dries on raised beds for up to three weeks, turned by hand and covered through the mid-day sun.

    Raised beds · 14–21 days
  7. The Union coffee mill plant

    Milling

    Dry parchment comes to the Union mill in Kerugoya, where hulling and cleaning release the green bean.

    County Coffee Mill · Kerugoya
  8. Green coffee being weighed and graded

    Grading

    Screens and gravity tables sort the bean into AA, AB, PB, C, E, TT and MBUNI before it is weighed into lots.

    Screen and density sorted
  9. A cupper assessing samples at the Union laboratory

    Cupping

    Every outturn is roasted and cupped in the Union laboratory, and the score follows the lot to the auction floor.

    Union laboratory · every outturn
02 The Process

Six steps from parchment
to auction lot

Intake & Weighing

Parchment arrives from member factories, weighed and logged per society for full traceability.

Hulling

The parchment layer is removed to reveal green beans, with minimal breakage.

Cleaning & Sorting

Density and screen sorting remove defects and foreign matter.

Grading

Beans are separated into AA, AB, PB, C and secondary grades by size and density.

Cupping & Profiling

Every outturn is sample-roasted and cupped to document its flavour profile.

Bagging & Dispatch

Lots are bagged, sealed and dispatched to the Nairobi Coffee Exchange or direct buyers.

14
Member Societies
65
Coffee Factories
2,990t
Clean Coffee · 2025/26
1,353t
Of Which AA Grade
Mountain landscape at dusk
For Buyers & Roasters

Taste the slopes of
Mt. Kenya