Half Caff: Blend
WashedMediumDecaf
Cherrybook Index
56sparse
Evidence-of-quality score, not a cup score. Sparse signal: 2 of 7 signals on file. Methodology
Price position
US$1.30/ozNZD 19.50 for 250g
this lot $1.30$1.07$1.73
Typical band for this profile $1.07 to $1.73. Where it sits
Catalog summary
A washed lot from Colombia, not yet indexed (2 of 7 signals on file) and priced inside the typical band for its listed profile.
Based on the listing and catalog evidence
Price and availability set by the roaster.
Cherrybook last checked this listing today.
Roaster’s notes
orange · honeycomb sweetness · milk chocolate
- Citrus
- Cocoa and nut
- Sugar and spice
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
- Colombia
- Producer
- —
- Farm / Co-op
- —
- Process
- Washed
- Altitude
- —
- Varietals
- Caturra
- Harvest
- —
- Weight
- 250g
- Bag price
- NZD 19.50
- Price / oz
- US$1.30/oz
- Brew
- espresso
from the roaster’s storeread by Cherrybook from the listing“estimated” below = inferred, not stated
Price contextmodeled
A modeled range and current prices for comparable listings.
$1.30/oz
typically $1.07 to $1.73
Where it sits
typical band this lot
What moves this price
cheaper×1.00pricier
- Roaster brand and sourcing×1.16
- Colombia origin×1.05
- Washed process×0.96
- Half-caf×0.97
At 250 g, this bag runs about 2% more per ounce than a typical 306 g bag; that is pack size, not the coffee.
How this estimate works
A statistical model, refit weekly across the in-stock catalog, estimates what a coffee with these listed attributes typically sells for per ounce. Each multiplier compares one trait against the average lot in this market; the roaster line covers brand and sourcing together, which this model cannot separate. Bag size is shown separately, priced at the rate observed across sizes of the same coffee, because it says nothing about the coffee itself. The distribution counts every in-stock listing in the comparison group, with at least 15 listings from three roasters and no roaster supplying more than 60% of it. Decaf, blends, variety segments, processing families and bag formats stay separate. Origin, roast and selling currency can broaden as the group label indicates. Prices are converted to USD per ounce; shipping and differences in tax treatment are not adjusted. The model reads listed attributes only: the quality of the specific lot in the bag is not observable, so a price above the typical band is not evidence of overpricing.
Not listed by the roaster: altitude
Cherrybook Index (CBI)
Evidence-of-quality score, not a cup score. Methodology
56
Sparse signal
Confidence2 of 7 signals on file
Score is heavily shrunk toward 50; treat as a placeholder until more sources arrive.
How confidence affects the score
Coverage measures signal availability, not cup quality. This coffee has 23% 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 43% so one thin signal cannot carry the score on its own.
The math on file: renormalized base 66.1 shrunk to 59.3 + bonuses = 56.
Missing: SCA grade, Coffee Review, YouTube reviews, On-shop ratings, Cherrybook ratings
- 72/ 78% weightReddit sentimentSentiment across specialty-coffee discussion
- 45/ 22% weightRoaster transparencyProducer / farm / lot disclosure depth
Bonuses applied
- +2Sprudge press coverageThis roaster has been featured by Sprudge
- +-5Stale-stock demotionThis lot has been listed in stock for an extended time; specialty coffee freshness degrades over weeks
Sensory profile
- Body
- 3
- Sweetness
- 4
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 Ozone Coffee Roasters
Community reputation · Reddit
Well-regarded· sentiment 72/100
Three Reddit posts give Ozone Coffee Roasters a mixed but favorable picture. One called a Bolivian Gesha out of this world. A London visitor found an Ozone filter coffee flat on that occasion despite great prior tastings at home, while another visitor simply reported Ozone was good.
Bolivian GeshaLondon filter coffeecafe and home contrast
Threads cited (3)
- r/Coffee · 10↑ · Filter Coffees in London Tasting Flat
...d be good. They all generally tasted flat, lacking in body, acidity and flavour, and almost like they were all stale. Some of the bigger names we visited were Ozone, Prufrock and Kiss the Hippo (the latter two make such wonderful espressos!). I know it can’t just be their beans or roasting because I have tasted them
- r/Coffee · 6↑ · 2 days in London, where is the best coffee?
Hey coffee friends, I'll be in london for a couple of days with lots of free time. What coffee shops should I visit? Edit: thanks for all the suggestions. I went to ozone, prufrocj, borough barista. Ozone and prufrock were good
- r/espresso · 4↑ · Ozone La Llama special reserve. Gesha grown in Bolivia. Out of this world.
Ozone La Llama special reserve. Gesha grown in Bolivia. Out of this world.
Press · Sprudge
- Coffee Design: Hasbean Coffee’s Redesign With Ozone Coffee Roasters2022-05-06·sprudge
The brand design of the UK’s Hasbean Coffee.
- Breaking: Ozone Coffee Roasters Acquires Has Bean Coffee2018-07-11·sprudge
The two companies are combining ownership as of June 29th.
On YouTube
6 videos · 666k combined views
Ozone Coffee Roasters has 1 video on their channel; 5 videos come from outside reviewers (What's Good London, Cafespot, Dan Carter, and others).
From Ozone Coffee Roasters
Coverage from others
- 591k views
HOW TO MAKE A FLAT WHITE COFFEE | Ozone Coffee Shoreditch | What's Good London
What's Good London
- 6k views
DELICIOUS BREAKFAST | Ozone Coffee Shoreditch | What's Good London
What's Good London
- 3k views
BEST LONDON COFFEE at OZONE Cafe & Roastery ☕️🇬🇧
Cafespot
- 2k views
OZONE COFFEE AND UPDATE VLOG!
Dan Carter
- 1k views
Thrillist - Ozone Coffee Roasters - London, UK
Thrillist