Za’atar is an Arabic word used to describe both a specific herb and a tangy blend of herbs and spices that varies according to region but includes the resinous herb za’atar, tart brick-red ground sumac, and toasted sesame seeds. Use za’atar to season grilled lamb or mix with plain yogurt and drizzle with olive oil for a vegetable dip.
Combine dried crushed za’atar leaves (or crushed thyme, summer savory, oregano, marjoram, or a mixture), toasted sesame seeds, and ground sumac. Grind to a chunky paste and season with salt to taste. Store at room temperature. Za’atar’s flavor will begin to fade after 2 months.