Editorial sacred-geometry illustration for India Ratnagiri Thermal-Shock, not a photograph of this coffee or its packaging

Editorial illustration · not a coffee photograph

Editorial sacred-geometry artwork for India Ratnagiri Thermal-Shock; not a documentary photograph

Editorial illustration

🇮🇳India · Chikmagalur

India Ratnagiri Thermal-Shock

Roasted by Onyx Coffee LabRoaster's website

EXPERIMENTAL PROCESS

TagsIndia Chikmagalur Catuaí Light roast Peach Wine-like Arabica Single origin Ratnagiri Estate Ashok Patre Onyx Coffee Lab Independent

🇮🇳IndiaThermal ShockCatuaíLight roast

Brand

Onyx Coffee Lab

Roaster website

Visit website

Country

🇮🇳India

Region

Chikmagalur

Town

—

Farm / Station

Ratnagiri Estate

Farmer / Producer

Ashok Patre

Species

Arabica

Type

Single origin

Grade

Not specified

Variety

Catuaí

Process

Roast

Light

Tasting notes

hibiscus, peach, winey, chocolate cookie

Fermentation

Mixed-oxidation four-day sequence including 60 hours in a tank and an additional sealed, pressurized fermentation with inoculants; followed by depulping and channel washing

Drying

Approximately 16 days on patios; Onyx’s summary card separately says raised-bed dried

Product page

Roaster's site

Date reviewed

—

Why some details are blank

harvest yearOnyx lists December as the harvest season but does not publish the crop year.
inoculantThe exact page says inoculants were used but does not identify the culture.
fermentation parametersFour days, a 60-hour tank stage, sealed pressure and inoculation are stated; remaining durations, temperatures and pressure are not.
drying methodOnyx’s exact page conflicts between Raised-Bed Dried in its summary and approximately 16 days on patios in its detailed process.
green-cost payment stageThe exact page reports $8.30 green cost but does not label that figure farm-gate, FOB, or EXW.
roast dateNo bag-specific roast date is available for this archived release.
public sentiment ratingNo qualifying independent tasting review or rating was found for the exact 2026 release.

Spotted an error? Report a correction →

The transparency chain

FROM THE BAG
BACK TO THE LAND.

Every link we could verify, traced in one place. Follow the chain as far as it goes — when the industry doesn't disclose a link, we say so instead of guessing.

01
The name on the bag
India Ratnagiri Thermal-Shock
Named on the bag
02
The brand
Onyx Coffee Lab
Documented
03
The roaster
Onyx Coffee Lab
Documented
04
The variety
Catuaí
Documented
05
The farm
Ratnagiri Estate
Documented
06
The farmer
Ashok Patre
Documented
07
The region
Chikmagalur
Documented
08
The country
🇮🇳India
Documented

From the producer

Ashok Patre operates Ratnagiri Estate in Chikmagalur and works with microbiologists to monitor fermentation. Onyx presents this lot as its inaugural Indian offering and emphasizes the estate’s science-led processing program.

From the roaster

Onyx archives this as a light, experimental Thermal-Shock release, ground Agtron 129, with a dedicated Origami/Kalita filter recipe and espresso starting point. Its exact page also publishes sourcing and lot-transparency data.

Why this coffee is noteworthy

Onyx’s inaugural Indian offering pairs Catuaí at 1,340 meters with Ashok Patre’s monitored, inoculated four-day fermentation. The page preserves a meaningful source conflict: its summary says raised-bed dried, while its detailed process says approximately 16 days on patios.

The honest process breakdown

WHAT DID THEY ACTUALLY
DO TO THIS COFFEE?

Verified exact identity

Matched Ratnagiri Estate, Ashok Patre, Chikmagalur, Catuaí, 1,340 m, December harvest season, Thermal-Shock processing, Light roast, Agtron 129, and roaster descriptors to Onyx’s exact archive.

Corrected the retail package

Replaced an inferred 312 g catalog weight with the exact Onyx 10 oz option, independently archived as 283 g at $37.

Preserved the drying conflict

Kept both Onyx statements visible: the summary labels raised-bed drying, while the detailed process says approximately 16 days on patios.

Added brewing and trade context

Added Onyx’s filter and espresso starting recipes plus its $8.30 green cost, $0.09 import cost, B+ payment-traceability grade, $2.46 market reference, 86.5 green assessment, and 1,322-pound lot.

Audited independent coverage

No qualifying independent tasting review was verified for this exact 2026 release; catalog indices, seller copy, and a differently titled 2025 Reddit review were excluded.

What was added?

Correct 10 oz / 283 g / $37 archived offer, current sold-out verification, brew recipes, sourcing transparency, and a refreshed exact-release sentiment audit.

What wasn't added?

No harvest year, inoculant identity, silent drying resolution, roast date, owner tasting score, or numerical public sentiment rating was invented.

Why it matters

The profile now uses the exact retail package and separates Onyx’s sourcing score and trade figures from owner and public review scores.

What you might taste

Hibiscus, peach, winey fruit, and chocolate cookie, according to Onyx; these are roaster descriptors, not an owner tasting result.

Sources for these process claims

· https://onyxcoffeelab.com/products/india-ratnagiri-natural
· https://thepress.coffee/coffees/onyx-coffee-lab-india-ratnagiri-thermal-shock
· https://beanhoard.com/roaster/onyx-coffee-lab/india-ratnagiri-thermal-shock
· https://waveform.coffee/radar/offerings/ba40e822-16f0-4570-89dc-79f214f7be25
· https://cherrybookcoffee.com/coffee/onyx-india-ratnagiri-natural

Coffee profile

In the database. Not tasted. Not scored.

This coffee is in our database because we can reliably document it — but we haven't tasted and scored it yet, and we never publish a score we haven't earned.

Outside reviews and internet discussion — is kept clearly separate from our own review. When we taste it, our full review appears here.

The internet pulse

What the internet is saying about this coffee

Research complete — no qualifying reviews yet

Our research pipeline scanned public reviews, videos, forums and discussions for this coffee (last pass 2026-11-07) and found no independent review of this exact release that meets our verification standards. When qualifying sources appear, they'll be published here.

What we found

Exact-title catalogs and availability trackers were used for package and stock corroboration, not tasting sentiment. Cherrybook’s 66 is an evidence-of-quality index using sparse and roaster-level signals, not an exact-release cup score. A December 2025 Reddit review titled Ratnagiri Experimental was excluded because it does not establish the same 2026 release.

Until then, meet the people behind it:

Meet the farm: Ratnagiri Estate →Meet the farmer: Ashok Patre →

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Same coffee, different roaster?

Other roasters, same producer.

These coffees come from the same producer or farm, offered by other roasters. We never automatically declare two offerings the exact same coffee — a match requires lot, harvest and traceability details. Even a true same-lot pair can taste different: roast approach, freshness, rest and brewing all reshape the cup.

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India Ratnagiri Thermal-Shock

FROM THE BAGBACK TO THE LAND.

WHAT DID THEY ACTUALLYDO TO THIS COFFEE?

In the database. Not tasted. Not scored.

What the internet is saying about this coffee

Try these next →

Other roasters, same producer.

Your coffee interests. Every section.

FROM THE BAG
BACK TO THE LAND.

WHAT DID THEY ACTUALLY
DO TO THIS COFFEE?