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Cherrybook.
Onyx Coffee Lab

India Ratnagiri Thermal-Shock

ExperimentalLight74Cherry's Index

Cup profile

hibiscus · peach · winey · chocolate cookie

  • Fruit
  • Citrus
  • Floral
India Ratnagiri Thermal-Shock by Onyx Coffee Lab
Producer
Ashok Patre
Farm / Co-op
Ratnagiri Estate
Altitude
1340–1340 m
Varietals
catuai
Harvest
Weight
312g
Bag price
$37.00
Price / oz
$3.36/oz
Brew
filter, espresso

from the roaster’s storeread by Cherrybook from the listing“estimated” below = inferred, not stated

Buy on Onyx Coffee Lab

Price and availability set by the roaster.

Roasts to order · ships in ~1d

Your bag is roasted after you order; expect a short delay before it ships, but it arrives as fresh as the roaster can make it.

All of our coffee for the cafes and for online orders are roasted to order, and we roast and ship our coffees Monday through Friday. source ↗

Cherrybook last checked this listing today.

Price contextmodeled

What this profile typically sells for across the catalog.

$3.36/oz

typically $2.71 to $4.45

Where it sits

86 India lots in stock

typical band this lot

91st percentile of 86 India lots in stock right now.

What moves this price

cheaper×1.00pricier
  • Roaster brand and sourcing×1.49
  • Experimental process×1.23
  • India origin×0.89
  • Light roast×1.05
How this estimate works

A statistical model, refit weekly across the in-stock catalog, estimates what a coffee with this exact profile 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 lot in the comparison class, so it moves as the catalog does. 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.

Cherry's Index

Evidence-of-quality score, not a cup score. Methodology

74

Noted

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 81.6 shrunk to 68.2 + bonuses = 74.

Missing: SCA grade, Coffee Review, YouTube reviews, Buyer reviews, Cherrybook tastings

  • Reddit sentiment
    Sentiment across specialty-coffee discussion
    82/ 78% weight
  • Roaster transparency
    Producer / farm / lot disclosure depth
    80/ 22% weight

Bonuses applied

  • Sprudge press coverage
    This roaster has been featured by Sprudge
    +2
  • World Coffee Championships finalist lot
    This roaster sourced a World Coffee Championships finalist routine
    +3
  • Editorial coverage cluster
    This roaster has 3+ recent editorial mentions across trade press
    +1

Flavor wheelestimated

Comps & alternatives

Tasting flight

Taste this against three more lots Cherry picks.

Brew a set side-by-side. Cherry varies the picks along axes that pair with this lot; origin, process, roast, or producer; so you learn the difference, not just drink four good cups.

Build the flight

Reference · About the varietal & origin

About Onyx Coffee Lab

Community reputation · Reddit

Well-regarded· sentiment 82/100

Onyx Coffee Lab is widely recognized as a major name in specialty coffee, frequently referenced alongside other top-tier roasters like Brandywine and Tandem. Redditors often turn to them as a benchmark for high-end beans, light roasts, and popular blends like Monarch and Southern Weather, though some debate their pricing relative to home roasting or other commercial options. Their consistency in bean sizing and roast uniformity is also noted by home roasters using them as control samples.

widely recognized benchmarkpopular espresso and filter blendslight and expressive dark roastspremium pricing discussionsconsistent bean quality
Threads cited (10)

Press · Sprudge

On YouTube

7 videos · 181k combined views

Onyx Coffee Lab has 5 videos on their channel; 2 videos come from outside reviewers (Seattle Coffee Gear, Whole Brain Coffee).

Onyx Coffee Lab

$3.36/oz· $37/bag

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