laurus

Bay leaf comes from the laurel tree — Laurus nobilis — and the word bay entered English from the Old French baie, from the Latin bāca (berry). The laurel tree's berries, not its leaves, gave it its English name. But it is the leaves that matter in the kitchen. The Latin name laurus gave English laureate, and the connection between laurels and honor runs through two millennia of European culture.

Roman generals wore laurel wreaths in triumph. Poets were crowned with laurel — the poet laureate is literally 'the laureled poet.' The baccalaureate degree means 'laurel berries' (from bāca + laurus). Apollo pursued Daphne, who was transformed into a laurel tree to escape him — the Greek dáphnē means laurel. An entire mythology of honor, poetry, and divine obsession grew around this one Mediterranean tree.

In the kitchen, bay leaf is the most patient seasoning. It releases flavor slowly over long cooking — twenty minutes minimum, an hour is better. This is why recipes say 'add a bay leaf' to stews, soups, and braises but never to quick sauces or salads. The leaf itself is leathery and unpleasant to chew. You put it in. You take it out. The flavor stays. The leaf leaves.

Turkish bay leaves, California bay leaves, Indonesian bay leaves (salam), and Indian bay leaves (tej patta) are all called 'bay leaf' in English but come from different trees in different botanical families. Only Laurus nobilis is the true bay. The others have different flavors — California bay is much stronger, almost eucalyptus-like. The word 'bay leaf' has been applied to any aromatic leaf used in cooking, regardless of genus.