Oregano

What it contributes

Oregano brings a warm, peppery, faintly bitter and floral aroma that is central to southern-Italian and Mediterranean flavor. It is the herb you taste on a good tomato focaccia or a Sicilian sfincione, cutting the sweetness of tomato and the richness of oil.

It has real affinity for tomato, garlic, olives, capers, and anchovy — the savory building blocks of southern focaccia.

Why dried often wins

Oregano is the classic exception to the "fresh is best" rule. Drying concentrates its aromatic oils and mellows its harsher green edge, giving the rounded, familiar flavor most people associate with the herb. A good dried oregano — especially Sicilian or Greek oregano sold on the branch — is intensely fragrant.

Fresh oregano is more delicate and grassy; it works, but you need more of it and it can taste sharper. For tomato focaccia, dried is the dependable choice.

How to use it

Sprinkle dried oregano over the tomatoes and oil rather than directly onto bare, exposed dough, where thin dry leaves can burn. Rubbing it between your fingers as you scatter it releases more aroma. On a raw-sauce focaccia pizza it can go on before baking; on a fresh-tomato focaccia, adding some after baking keeps it bright.

Use a measured hand — oregano is punchy, and too much turns bitter and medicinal.

Buying and storing

Buy dried oregano somewhere with turnover; like all dried herbs it fades over months and a dusty old jar tastes of nothing. Whole-leaf or on-the-branch oregano keeps its aroma longer than pre-ground. Store airtight, away from heat and light, and replace it once it stops smelling vivid when crushed.