Tempeh

What it is

A firm, sliceable cake of whole soybeans bound together by edible white mold — Indonesia's great fermented protein, and unusual for using the whole bean.

How it's made

Cooked, dehulled soybeans are inoculated with Rhizopus oligosporus and incubated until the mold's white mycelium knits the beans into a solid, dense cake. The fermentation makes the soy more digestible and adds flavor.

Flavor profile

Nutty, savory, earthy, with a firm, meaty bite and faint mushroom note from the mold; deepens as it ferments.

Culinary uses

Sliced and fried (tempe goreng), braised in sweet soy (tempe bacem), crumbled into sambals (sambal goreng tempe), and used as a hearty meat substitute worldwide. Functions as a main protein.

Regional & varietal variations — Beyond classic soy: black-eyed pea tempeh, multi-grain/legume tempeh, tempe gembus (made from okara, the soy pulp), and oncom-adjacent ferments. Java is the heartland.

Cultural & historical context

Originating in Java centuries ago, tempeh is a rare example of a non-East-Asian mold fermentation and a pillar of Indonesian daily protein; now a global plant-protein staple.

Reference notes

Tags: `soy`, `fermented`, `mold`, `protein`, `indonesian`. Related: tofu, natto, oncom. Cuisine: Indonesian (Javanese). Links → Tempe Bacem, Sambal, Rhizopus.