Editorial sacred-geometry illustration for Costa Rica Volcan Azul SL28 - Cafe Only, not a photograph of this coffee or its packaging

Editorial illustration · not a coffee photograph

Editorial sacred-geometry artwork for Costa Rica Volcan Azul SL28 - Cafe Only; not a documentary photograph

Editorial illustration

🇨🇷Costa Rica · Central Valley

Costa Rica Volcan Azul SL28 - Cafe Only

Roasted by Onyx Coffee LabRoaster's website

PROCESS NOT FULLY DISCLOSED

TagsCosta Rica Central Valley SL28 Arabica Single origin Volcan Azul Alejo Castro Onyx Coffee Lab Independent

🇨🇷Costa RicaSL28

Brand

Onyx Coffee Lab

Roaster website

Visit website

Country

🇨🇷Costa Rica

Region

Central Valley

Town

Alajuela

Farm / Station

Volcan Azul

Farmer / Producer

Alejo Castro

Species

Arabica

Type

Single origin

Grade

Not specified

Variety

SL28

Process

—

Roast

—

Tasting notes

—

Fermentation

—

Drying

—

Product page

Roaster's site

Date reviewed

—

Why some details are blank

availabilityThe official URL no longer exposes the product body; Waveform marks the release delisted and Cherrybook marks it out of stock, while a recently refreshed coffeeDB catalog still lists the SKU.
process idThe exact release does not disclose the coffee-fruit process, and other Volcan Azul SL28 releases use multiple different methods.
altitude mNo lot-specific elevation is published for this exact release; estate or other-lot elevations were not substituted.
harvestThe exact release does not disclose a harvest date or crop year.
fermentationThe exact release does not disclose fermentation details.
drying methodThe exact release does not disclose a drying method or duration.
roast levelThe exact release does not disclose a roast level.
tasting notesNo exact-release tasting notes were captured or found.
roast dateNo bag-specific roast date is documented.
public sentiment ratingNo qualifying independently authored exact-release tasting review or numeric cup score was found.

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
Costa Rica Volcan Azul SL28 - Cafe Only
Named on the bag
02
The brand
Onyx Coffee Lab
Documented
03
The roaster
Onyx Coffee Lab
Documented
04
The variety
SL28
Documented
05
The farm
Volcan Azul
Documented
06
The farmer
Alejo Castro
Documented
07
The region
Central Valley
Documented
08
The country
🇨🇷Costa Rica
Documented

From the producer

Volcan Azul is a historic and highly regarded coffee estate in the Alajuela region of Costa Rica. It is currently overseen by Alejo Castro, a fifth-generation producer known for his commitment to agricultural excellence and innovative processing techniques.

From the roaster

Onyx listed this as a café-only Costa Rica single-origin SL28. Historical exact-release catalog captures record a $94 whole-bean offer at 953 g; the official URL now loads without product details.

Why this coffee is noteworthy

The release pairs the Kenyan SL28 variety with Costa Rica's Volcan Azul estate, but it is unusually sparse by Onyx standards. Correctly retaining the documented identity and offer while withholding process and flavor claims prevents details from other Volcan Azul SL28 lots from being misattributed.

The honest process breakdown

WHAT DID THEY ACTUALLY
DO TO THIS COFFEE?

Reconciled structured commerce fields

Corrected the missing structured price to $94 and the package from 907 g to 953 g, matching two exact-release catalog captures.

Preserved exact identity

Retained the café-only Onyx release, Costa Rica origin, SL28 variety, Volcan Azul relationship, and Alejo Castro relationship already connected in the database.

Recorded conflicting availability evidence

Waveform marks the release delisted and Cherrybook marks it out of stock, while a recently refreshed coffeeDB catalog still lists the SKU. The official URL no longer exposes the product body, so availability remains Unknown.

Audited unsupported lot details and sentiment

No process, elevation, harvest, fermentation, drying, roast level, tasting notes, or qualifying independent exact-release tasting score was added.

What was added?

Verified $94 structured price, corrected 953 g package weight, current availability conflict, and explicit evidence gaps.

What wasn't added?

No live availability state, process, elevation, harvest, fermentation, drying method, roast level, tasting notes, owner tasting score, or public sentiment rating was inferred.

Why it matters

The record now matches the captured exact offer without borrowing production or sensory details from other Volcan Azul releases.

What you might taste

No exact-release tasting notes are documented.

Sources for these process claims

· https://onyxcoffeelab.com/products/costa-rica-volcan-azul-sl28-cafe-only
· https://waveform.coffee/radar/offerings/eb8c1353-bd85-4364-bb37-52659d00158a
· https://cherrybookcoffee.com/coffee/onyx-costa-rica-volcan-azul-sl28-cafe-only
· https://www.coffeedb.pro/roasters/onyx-coffee-lab

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

Waveform and Cherrybook are exact-release catalog records used for offer and availability evidence, not independent tasting reviews. Cherrybook's 63 is explicitly a sparse evidence-of-quality index, not a cup score, and its Reddit sentiment concerns Onyx generally or other coffees. No qualifying exact-release sentiment rating remains.

Until then, meet the people behind it:

Meet the farm: Volcan Azul →Meet the farmer: Alejo Castro →

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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.

Volcan Azul - Costa Rica - Washed SL28RELATED

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Compare the two →

Costa Rica Volcan Azul SL28 - Cafe Only

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?