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Ka-pi-plaa is the fish version of Thai ka-pi. Small fish are salted and drained overnight, sun-dried for two or three days, pounded and packed tight to ferment for weeks to months. The result is a salty, dark grey to brown paste used like shrimp ka-pi.
Fully documentedFish and seafood17 days – 4.1 months
Recipe
Amounts from a sourceThe JIRCAS method gives the fish-to-salt ratio only. The study made a laboratory batch with beardless barb following the household steps.
Total time across the recorded steps: 17 days – 4.1 months
Start
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What changes:Salted fish rest overnight in a bamboo basket as liquid drains out
Step 1 of 4
Mix fish with salt and drain overnight in a bamboo basket
Time
Not documented
Temperature
Not documented
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Lactic acid bacteria
The study first left the gutted fish at room temperature for 24 h to soften (autolysis) before salting; pH rose from 6.98 to 7.45. Output: salted fish; the liquid that drains off is collected.
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
Ka-pi-plaa is the fish version of Thai ka-pi. Small fish are salted and drained overnight, sun-dried for two or three days, pounded and packed tight to ferment for weeks to months. The result is a salty, dark grey to brown paste used like shrimp ka-pi. Made in 4 steps over 17 days – 4.1 months. The longest step, ferment in a closed jar, takes 15 days – 4 months (JIRCAS 1995) and runs at 28–30 °C (Sripokar P 2022). Salt is 27.3–37.7 % (Sripokar P 2022).
Ka-pi is made from tiny shrimp or krill; ka-pi-plaa uses small fish. It is less popular, so some producers blend it into ka-pi to make a cheaper paste.
The finished paste is salty (27.28–37.74 % on a dry basis) with a water activity of 0.602–0.777, which makes it an intermediate-moisture food that resists spoilage (Sripokar et al. 2022). Keep the paste covered and dry.
A 2022 study of ten commercial pastes says it is widely eaten as a condiment in southern and northeastern Thailand and has become one of the largest income generators for Phatthalung and Nakhon Si Thammarat provinces. A second 2022 study, of a beardless barb batch from Thale Noi, Phatthalung, calls the barb one of the traditional fish for ka-pi-plaa.
Starter
The sources we found do not say how its fermentation begins.