What are the differences between Greek and Mexican oregano?
Greek oregano (Origanum vulgare) is true oregano. It is a member of the mint plant family (Lamiaceae) with the typical citrus-like/minty flavor, and is similar – though less intense – to marjoram. Mexican oregano (Lippia graveolens) is a separate plant, in the verbena plant family (Verbenaceae). It has a flavor very similar to true oregano but with a stronger, hot celery-like flavor.