Oregano

Oregano: History, Active Compounds and Complete Culinary Guide

Oregano (Origanum vulgare) is one of the most powerfully flavoured herbs in the Mediterranean culinary tradition — the name derives from the Greek "oros" (mountain) and "ganos" (joy), meaning "joy of the mountains," reflecting its abundance on the rocky hillsides of the Greek countryside. Wild oregano growing in Mediterranean climates develops the highest concentrations of its essential oils due to the heat and dry conditions, producing an intensity of flavour that cultivated northern European oregano rarely matches. Mediterranean (Greek and Turkish) oregano and Mexican oregano (actually from a different plant, Lippia graveolens) both differ substantially from the more delicate northern European variety. Dried oregano is actually more potent than fresh — the essential oils concentrate on drying — making it one of the few herbs where the dried form is often preferred.

Active Compounds and Antioxidant Properties

Oregano's primary flavour compounds are carvacrol and thymol — phenolic compounds with demonstrated antimicrobial properties against a range of bacterial and fungal pathogens in laboratory studies. Oregano oil (concentrated essential oil) has been studied as a natural antimicrobial, though the concentrations needed for clinical effectiveness are far above culinary use. Dried oregano has one of the highest antioxidant activity measurements of any common herb or spice when measured per gram — though of course the quantities used in cooking are very small, and this antioxidant activity should be considered a modest contribution to overall dietary antioxidant intake rather than a primary health food.

Culinary Uses of Oregano

Oregano is essential on pizza, in pasta sauces, in Greek salad (use generously), in marinades for lamb and chicken, in moussaka, and in Mexican cooking. Dried oregano should be "bloomed" — rubbed between the palms before adding — to release its volatile oils. Add to tomato sauces early in cooking. Use liberally in Greek souvlaki marinades (lemon, olive oil, oregano, garlic). Combine with dried thyme and rosemary for a versatile Mediterranean herb blend. The robust flavour withstands long cooking better than most herbs. Use in dukkah and za'atar spice blends.