Kaffir lime leaves

Fresh, these can be hard to track down, but they also come freeze-dried rather like bay leaves, but with that unmistakable oriental-Thai flavour. Use dried, pounded in a pestle and mortar or soaked in a little hot water, and they're almost as good as new. Fresh leaves can be kept in the freezer.

Related recipes to look at:

Thai Fishcakes with Sesame and Lime Dipping Sauce