Native to southern Asia, curry leaf is an herb that comes from a tree. It is used in a lot of East Indian food. Fresh curry leaves look like small, shiny lemon leaves, and smell pungently of curry.
You can keep them in an airtight container in the refrigerator for up to two weeks or freeze them. While dried curry leaves are also available, they have less aroma and flavor. Curry leaves, which soften when cooked, are used to flavor rice, chutneys, soups, stews, and even dals.