Japan is a green tea country. Matcha, sencha, gyokuro — the entire domestic tradition is built around steaming leaves to lock in their color and stop oxidation before it starts. Black tea, which depends on the opposite process, was never part of that story. Almost none of it is made in Japan, and what little is has stayed largely unknown outside a handful of small producing regions.

Red Onyx is one of those rare exceptions.

Steamed first, oxidized second

Most black tea in the world (e.g. Assam, Ceylon, Yunnan) starts with withering, then rolling, then oxidation, using tea plant varieties bred for that process. Red Onyx starts the way Japanese green tea does: the leaves are steamed immediately after picking, which is unusual for a tea that's meant to end up fully oxidized.

That steaming step changes everything downstream. It softens the leaf differently than withering does, and it means the oxidation that follows has to be coaxed out deliberately rather than happening as a byproduct of bruising and drying. The result is a black tea with none of the tannic bite you'd expect, something closer to stone fruit and dried flowers than the malt and tannin of a typical breakfast blend.

The nine-stage roast

Once oxidation is complete, the leaf goes through a roasting process broken into nine distinct stages, each at a different temperature and duration. It's slow by design. Rushing it produces a flatter, more one-note tea. Done properly, each stage builds a different layer. The early stages set the base, the middle stages develop the tea's characteristic floral notes, and the final stages bring out the depth that makes Red Onyx taste like nothing else in the black tea category. After roasting, the leaves are stone-ground into a fine powder.

Why so little of this exists

Black tea production in Japan never scaled the way green tea did. Domestic demand stayed with matcha and sencha, export markets favored the black teas already coming out of India and China, and the handful of producers who kept experimenting with Japanese black tea did so in small volumes, often as a side project alongside their main green tea harvest.

That's part of why we carry it. Red Onyx is a tea that was already being made, in small quantities, by producers who cared enough to keep doing it without a market demanding it. Our job was to find them, work directly with them, and bring it to people who'd never otherwise encounter it.