Kaffir lime, also known as makrut lime, is a citrus fruit native to Southeast Asia. It is widely used in Thai, Indonesian, and other Southeast Asian cuisines for its distinctive flavor and aromatic qualities.

The fruit is small and round, with a bumpy, green exterior. However, it is the leaves of the Kaffir lime tree that are most prized for their intense fragrance and flavor. The leaves are often used in cooking to add a refreshing citrusy note to dishes, such as curries, soups, and salads.

In addition to its culinary uses, Kaffir lime leaves are also known for their medicinal properties and are used in traditional medicine for their antibacterial and anti-inflammatory effects.