Flavour Building Authority tier 2

Za'atar: Herb-Spice-Sumac Compound

Za'atar as a spice blend is inseparable from Palestinian and broader Levantine identity — it is the flavour of the morning, eaten with olive oil and bread, and the flavour that marks home cooking across the diaspora. The blend combines dried thyme or oregano (the herb za'atar itself), sumac, sesame seeds, and salt. Each component contributes a distinct frequency: herbal, sour, nutty, savoury. The blend is not a shortcut but a technology — a calibrated combination that achieves a flavour no single ingredient can.

A dry spice blend of dried za'atar herb (wild thyme or oregano), ground sumac, toasted sesame seeds, and salt, used as a finishing condiment, marinade component, or bread topping mixed with olive oil (the preparation called man'oushe).

Za'atar works as a bridge between fat and acid — it completes olive oil in the way that a vinaigrette needs both oil and acid to function. On labneh, it adds herbal complexity to dairy fat. On flatbread, it transforms simple carbohydrate into something complete. The blend is almost always used with fat (olive oil) because the herbal volatiles are fat-soluble.

- Sesame seeds must be toasted before blending — raw sesame seeds add only texture; toasted seeds add nutty depth and aroma - Sumac quality determines the blend's acid character — good sumac is burgundy-red, fragrant, and sour; old sumac is brown, dusty, and flat - The ratio of sumac to herb determines whether the blend reads as sour (high sumac) or herbal (high thyme) — Jerusalem-style blends tend toward higher sumac [VERIFY standard ratio] - Za'atar mixed with quality olive oil before application creates an emulsion that distributes the spices evenly — dry za'atar sprinkled on food creates uneven flavour spots - Store airtight — the volatile aromatic compounds in the dried herbs dissipate rapidly once the blend is made

OTTOLENGHI JERUSALEM — Technique Entries OT-01 through OT-25

Turkish kekik (dried thyme alone — the herb component without the blend), Moroccan ras el hanout (different spice architecture, same blending philosophy), Iranian advieh (similar role as a calibrated