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Tang-chai is sun-wilted cabbage cut in 1 cm squares and mixed in an earthen jar with brown sugar, salt, garlic, galangal and a little rice mould. It is sealed for 2 days, then moved to another airtight jar and left in the shade for about 30 days, until it turns brownish yellow. It is used as a seasoning in clear soups and pork noodles.
A short entry: the sources we found record only what is said here about Tang-chai itself.
DocumentedVegetables32 days
Recipe
Amounts from a sourceProportions from the JIRCAS Thai fermented-food card; no batch size is given.
Cabbage leaves, sun-wilted and cut into 1 cm squares2 parts
Brown sugar, salt, garlic, galangal and a small amount of rice mould1/4 part, mixed
The card gives the mix as one part and no split between the items[jircas]
Total time across the recorded steps: 32 days
Start
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What changes:Cabbage leaves wilt in the sun and are cut into small squares
Step 1 of 3
Wash, sun-wilt and cut the cabbage
Time
Not documented
Temperature
Not documented
Salt
None given
Acidity
Not documented
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
Not documented for this step.
Method
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
At a glance
Tang-chai is sun-wilted cabbage cut in 1 cm squares and mixed in an earthen jar with brown sugar, salt, garlic, galangal and a little rice mould. It is sealed for 2 days, then moved to another airtight jar and left in the shade for about 30 days, until it turns brownish yellow. It is used as a seasoning in clear soups and pork noodles. Made in 3 steps over 32 days. The longest step, move to an airtight jar and ferment in the shade, takes 30 days (JIRCAS 2026).