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Tea leaf from Myanmar
Young tea leaves are steamed, rolled and pressed into a lined pit for months, where lactic bacteria turn them sour and golden-green. Lahpet is eaten as a salad, not brewed. Made in 6 steps over 27 days – 16 months. The longest step, pack into a lined pit and weigh down, takes 20 days – 12 months (Thar S.P. 2016) and runs at 30 °C (Myat Kyaw Thu 2003). Lactobacillus and Acetobacter do most of the fermenting.
| Main step | 20 days – 12 monthsSourced[thar2016][kham2024] | Pack into a lined pit and weigh down |
|---|---|---|
| Temperature | 30 °CMeasured[mkt2003] | Pack into a lined pit and weigh down |
| Acidity | pH 4.4–7.1Measured[bo2020][thar2016] | Pack into a lined pit and weigh down |
| Young tea leaves and buds · Young flush of Camellia sinensis var. assamica[thar2016] |
| No salt · Nothing is added to the pit[thar2016] |
| No starter · Bacteria and yeasts come from the leaf and the pit[bo2020] |
| Garlic, chilli, salt, lime juice and peanut oil (to taste) · To dress it for eating[act2022] |
| Starter: spontaneous |
Total time across the recorded steps: 27 days – 16 months
What changes: Starting material: young tea leaves and buds
Output: young leaves and buds.
Microbes at work in this step
Not documented for this step.
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
Lahpet is one of the few teas that is eaten, not drunk. Unlike miang it is pressed in a pit or tank with the air squeezed out, and nothing at all is added until it is served.
Finished products measured pH 4.35–7.11. A pH above 4.6 is above the limit New Zealand uses for botulism control, so keep seasoned lahpet cold.
Hazards the sources name: Escherichia coli (2 of 20 market samples).
Every number is labelled with how it is known. How this atlas is made
Folklore credits King Alaungsithu in the 12th century. Lahpet was a peace offering between kingdoms and was eaten to accept a court verdict.
