Dried oregano

Dried oregano is a commercial category stretched across two botanical families that share an aroma but not a lineage. The Mediterranean reference is Origanum vulgare subspecies hirtum, the Greek oregano of Crete and the Peloponnese, alongside Origanum onites, the Turkish or Cretan oregano that dominates Aegean export from Izmir and Mugla. Both belong to the Lamiaceae (mint family), and both carry the same volatile signature: carvacrol and thymol together accounting for sixty to eighty percent of essential oil, with p-cymene and gamma-terpinene rounding out the backbone. Mexican oregano, Lippia graveolens, is an unrelated Verbenaceae shrub native to the Sierra Madre Oriental and Oaxaca; its oil runs higher in thymol and carries a resinous, almost licorice-adjacent lift that Mediterranean oregano lacks. The distinction matters at the stove: Greek oregano is the herb of pizza margherita, Greek salad, grilled lamb and the Italian-American red-sauce canon; Mexican oregano is the herb of tacos al pastor, birria, pozole rojo and any long-simmered chile stew where its capacity to stand up to cumin and dried chiles is non-negotiable. Substituting one for the other flattens both dishes. Commodity oregano sold under no cultivar name is usually a blend of O. vulgare, O. onites and Spanish Thymus capitatus, legal in most markets but aromatically inferior.