Pan-firing (Chinese fixation)
Fixation by direct contact with a heated wok or drum, which halts oxidation and toasts the leaf at the same time.
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
The Chinese standard, and the reason Chinese green tea tastes so unlike Japanese. Leaf is tumbled in a wok or rotating drum heated well above the temperature at which the oxidation enzymes fail. Because the heat arrives by contact with hot metal rather than through steam, the leaf surface toasts as it fixes, contributing chestnut, roasted grain and nutty notes that are inseparable from the step itself. For high-grade teas such as Longjing the same hands that fix the leaf also press it into shape, so fixation and shaping happen together.
Also transliterated as: chao qing, chaoqing.
What it does to the leaf
Denatures oxidation enzymes through dry contact heat while simultaneously initiating surface browning reactions in the leaf.
What it does to the cup
Adds toasted chestnut, roasted grain and nutty character; produces a yellow-green rather than vivid green liquor.
Variants that matter
Ways this step is carried out that produce genuinely different results, rather than regional names for the same thing.
- Hand wok firing
- Used for premium teas such as West Lake Longjing, where the maker fixes and shapes in one continuous set of movements.
- Drum fixation
- Mechanised tumbling in a heated rotating cylinder; the standard for volume production and the norm in Korea as well as China.
Where this gets misdescribed
Pan-firing is often described as 'roasting the tea'. Roasting is a separate, later, much longer step applied to already-finished leaf. Pan-firing lasts minutes and its purpose is enzyme denaturation; the toasted note is a side effect rather than the goal.
Other steps at the Fixation stage
- Drum fixation — Kill-green in a heated rotating cylinder that leaf passes through continuously, which is how most Chinese green tea is now fixed.
- Kill-green (fixation) — Heating the leaf to stop oxidation — the step that makes green tea green.
- Spreading and cooling (tan liang) — Getting the heat out of the leaf immediately after a hot step, because heat that stays in the leaf keeps cooking it after the operator has stopped.
- Steaming (Japanese fixation) — Fixation by live steam rather than dry heat — the choice that separates Japanese green tea from Chinese.
Teas that go through this step
Guides covering this step
- Why green tea tastes grassy — Because the fixation step preserves compounds that oxidation would otherwise transform — and because in Japanese tea, steaming preserves a different set of them than pan-firing does.
- Steam or pan: the fork that split green tea in two — Japanese and Chinese green teas taste categorically different, and the reason is not the plant, the place or the picking. It is that one tradition stops oxidation with steam and the other stops it with hot metal.
- Firing, roasting and baking: what heat makes that was not there before — Heat is applied to tea at several points for several different reasons, and only some of them are about drying. The reactions between sugars and amino acids generate an entirely new set of aromas, which is why a roasted tea is not a darker version of an unroasted one.
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.
- Drum fixation vs pan-firing — Almost all Chinese green tea is now fixed in a heated rotating cylinder rather than in a wok, and the two are usually described interchangeably as pan-firing. The heat transfer is different, and so is what the leaf can be made to do while it is being fixed.
- Steaming vs pan-firing as kill-green — Both steps do the same job — denaturing the enzymes that would otherwise brown the leaf — and they leave completely different signatures while doing it. This one decision, taken in the first minutes after plucking, is most of why Japanese and Chinese green teas taste unrelated despite sharing a category.