kaffir lime leaves
The glossy, double-lobed leaves of the makrut lime tree, prized for an intense citrus aroma; increasingly labeled 'makrut lime leaves' in stores. Used whole or torn to perfume curries, soups, and braises.
Buying guidance
Look for them fresh or frozen, often near other Southeast Asian produce, rather than dried -- drying dulls their aroma considerably, and frozen leaves keep their scent well without needing to thaw first. Whole leaves are typically added like a bay leaf and fished out before serving; very finely sliced leaves can be left in and eaten.
Substitutions
- Lime zest plus a small amount of lemongrass -- approximates the citrus-floral aroma, though it fades faster than the real leaf.
- Makrut lime zest alone, where available -- closer in aroma than ordinary lime zest.
- Omit -- do not substitute ordinary bay leaves for flavor; they share only the add-whole-and-remove technique, not the taste.
Tips & common mistakes
Tear or bruise the leaves before adding them whole -- this breaks the waxy surface and releases far more of their aroma into the dish than dropping them in fully intact.
Storage
They freeze unusually well for a fresh herb -- the thick, waxy leaves hold their aroma frozen for months, so it's worth buying extra when you find fresh ones even if you only need a couple right away.