Final firing (hiire)
The last heat a Japanese green tea receives, applied at the refiner rather than the grower, and the lever that decides whether a sencha reads as fresh and grassy or sweet and toasted.
The categories this step defines
In tea, processing is not a modifier applied to a category — it is what creates the category. These are the types that exist because this step exists.
- Green tea — Kill-green (fixation) applied before meaningful oxidation can develop.
What it is
Aracha carries more moisture than a finished tea can keep, and the refiner's last operation is a firing that takes it down to storage dryness. Because it is applied to a tea that is already sorted, its temperature is a style decision rather than a technical necessity — a low firing keeps the marine, vegetal, fresh character the leaf came in with, while a higher one develops a nutty, sweet, faintly roasted note that a Japanese buyer recognises immediately and that many houses build their reputation on. Kyoto and Shizuoka practice differ on it as a matter of regional taste. The same lever, pushed much further, stops producing sencha at all and produces hojicha instead, which is why the two operations share vocabulary and machinery and why a very strongly fired sencha sits recognisably between them. Firing is also what makes the tea keep: a lightly fired tea is the more delicate one in both senses, and it stales faster.
Also transliterated as: hiire, hi-ire.
What it does to the leaf
Reduces refined leaf to storage moisture using hot air, a heated drum or a radiant-fired cylinder, while developing surface browning reactions whose extent the refiner chooses.
What it does to the cup
Low firing keeps grassy, marine and umami character; higher firing builds nutty, roasted-grain sweetness and reduces the fresh top note. It is the single largest stylistic decision taken after the leaf leaves the grower.
Variants that matter
Ways this step is carried out that produce genuinely different results, rather than regional names for the same thing.
- Low firing
- Favoured where freshness is the point, including for most shincha and for teas sold on aroma. Shorter shelf life.
- High firing (fukabi)
- A deliberately strong finish giving toasted sweetness and body. A house signature in several long-established shops rather than a defect.
- Radiant versus hot-air firing
- Different machines give different balances between drying and browning at the same nominal temperature, which is why refiners are specific about equipment.
Where this gets misdescribed
A Japanese green tea's character is assumed to have been decided in the field and at the steamer. The final firing happens after the grower has sold the tea, in a different business, and it can move the same aracha across most of the visible range of the category.
Other steps at the Roasting stage
- Charcoal roasting — Slow roasting over charcoal in baskets, in repeated sessions separated by weeks of resting.
- Electric baking — Roasting in a temperature-controlled electric oven rather than over charcoal.
- Hojicha roasting — A short, hot roast applied to finished Japanese green tea, which converts it into a categorically different drink in minutes.
- Re-firing — A light low-temperature bake applied to already-finished tea to drive off absorbed moisture.
- Resting between roasts (tui huo) — Weeks or months of doing nothing between one roast and the next, during which the raw fire note recedes and the maker finds out what the roast actually did.
- Roasting — Applying sustained heat to finished leaf to build toasted character, reduce moisture and stabilise the tea for keeping.
Teas that go through this step
Guides covering this step
- What happens after the drier — In several traditions a tea is not finished when it comes out of the drying machine. Sorting, refining, final firing, blending and resting are real operations, they are frequently performed by a different business, and they can move a tea further than anything the grower did.
- Drying, firing, baking, roasting: four words and one machine — Heat is applied to tea at least four times in some routes, for four different purposes, sometimes in the same basket over the same charcoal. The words overlap badly, and the way to tell them apart is by where they sit in the sequence.
Sources
- TeaHQ editorial synthesis — TeaHQ
This page is TeaHQ’s own synthesis of well-attested production practice. No external technical document stands behind it, so it describes what producers do rather than asserting measured process parameters.
Written comparisons
Where TeaHQ has set this step against something it is routinely confused with, and argued the differences out in full.
- Roasting vs final firing vs re-firing — Three heat treatments that share machinery and vocabulary and answer three different questions: what should this tea taste like, how dry does it need to be, and can this tea be brought back.