Mamuto AB — Medium
AB
WashedMedium
Cherrybook Index
86Top tier
Evidence-of-quality score, not a cup score. Confident: 3 of 7 signals on file. Methodology
Price position
$4.25/oz$34.00 for 227g
Price position appears once the price model has scored this lot.
Catalog summary
A washed lot from Kirinyaga, Kenya, indexed 86 on confident evidence.
Based on the listing and catalog evidence
Currently out of stock at the roaster. Subscribe to get an email when it returns.
Cherrybook last checked this listing 61 days ago.
Roaster’s notes
plum · blackberry · dark_chocolate
- Fruit
- Cocoa and nut
Open the flavor wheel
Mapped from the roaster’s tasting notes to the SCA flavor wheel; Cherrybook’s interpretation of the stated notes, not the roaster’s own categorization.

- Origin
- Kirinyaga, KE
- Producer
- Patrick Mathagu
- Farm / Co-op
- Mamuto
- Process
- Washed
- Altitude
- 1524 m
- Harvest
- 2024
- Weight
- 227g
- Bag price
- $34.00
- Price / oz
- $4.25/oz
- Brew
- filter, espresso
from the roaster’s storeread by Cherrybook from the listing“estimated” below = inferred, not stated
Cherrybook Index (CBI)
Evidence-of-quality score, not a cup score. Methodology
86
Top tier
Confident
Confidence3 of 7 signals on file
Enough independent signal to score at face value; no shrinkage applied.
How confidence affects the score
Coverage measures signal availability, not cup quality. This coffee has 43% of the signal universe on file. Missing sources are dropped, remaining weights are renormalized, and the result is shrunk toward a neutral 50 baseline by 0% so one thin signal cannot carry the score on its own.
Missing: SCA grade, YouTube reviews, On-shop ratings, Cherrybook ratings
- 86/ 42% weightReddit sentimentSentiment across specialty-coffee discussion
- 80/ 47% weightCoffee ReviewMean score from coffeereview.com
- 80/ 12% weightRoaster transparencyProducer / farm / lot disclosure depth
Bonuses applied
- +2Sprudge press coverageThis roaster has been featured by Sprudge
- +1Editorial coverage clusterThis roaster has 3+ recent editorial mentions across trade press
Base weighted score: 82.5 + bonuses = 86
Comps & alternatives
Tasting flight
Compare this with three more lots selected from the catalog.
Brew a set side-by-side. The picks vary along axes that pair with this lot; origin, process, roast, or producer; so you learn the difference, not just drink four good cups.
Reference · About the varietal & origin
About George Howell Coffee
Community reputation · Reddit
Cult favorite· sentiment 86/100
Two independent Reddit comments give George Howell Coffee strongly favorable but limited evidence. One home roaster said matching George Howell's roast quality was extremely difficult. Another said a frozen Borboya retained the coffee's integrity.
roast qualityfrozen Borboya
Threads cited (2)
- r/roasting · 11↑ · Freezing GREEN !?!
I've had frozen coffee from friends who roast/home roast as well as George Howell's Borboya. It's definitely possible to keep the integrity of the coffee intact. Vac pack + a freezer that sits at 0F or below that doesn't get opened often is the best way to go.
- r/roasting · 8↑ · Procuring high-quality green beans
...it's not very hard to home roast and get "good coffee". However, my experience is that it is extremely hard to match what you can buy from Verve, George Howell, etc, and that you should not get into roasting with that goal in mind. Equipment vs. Technique, I'll say both. Obviously, if I had the same equipment as Ver
Press · Sprudge
- George Howell: The Sprudge Twenty Interview2025-11-18·sprudge
An interview with 2025 Sprudge Twenty inductee George Howell.
- 30 Minute Acid Trip: George Howell, Snapchill, And The Quest For Cold Coffee Acidity2024-05-07·sprudge
A closer look at the partnership between Snapchill and George Howell Coffee.
On YouTube
Meet the roaster on camera
About the roasterShop tour
Inside the Roastery at George Howell (Behind the Scenes Roastery Tour)
Roaster Kat · 5.4K views on YouTube
Watch on YouTubeThis video covers George Howell Coffee; it is general roaster coverage.
Cherrybook summary of the video
This video provides a tour of the George Howell Coffee roastery, showcasing their quality control lab, green coffee storage, and roasting equipment, including their Loring S70 roaster. It also highlights their commitment to air quality in the facility, featuring a unique living moss wall for natural CO2 filtration.
Inside this video
From Roaster Kat:
“This is our quality control lab. We have our two QA Q graders here.”
“We have our newest roaster, our Loring S70. We do our full bag batch sizes on that roaster.”
Explore the videos
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