Kaffir, Makrut Lime Tree (Citrus hystrix)

Common Tree Names: Kaffir Lime, Makrut Lime, Thai Lime, Kubot
Family: Rutaceae
Origin: Southeast Asia

This Kaffir Lime Tree (Citrus hystrix), also known as Makrut Lime Tree or Thai Lime Tree, is a distinctive citrus tree native to Southeast Asia, renowned for its aromatic leaves and bumpy, green fruit. Unlike other citrus varieties, the Kaffir Lime is prized not only for its fruit but primarily for its leaves, which are a key ingredient in many Southeast Asian cuisines. The intensely fragrant leaves add a unique, tangy flavor to dishes, making the Kaffir Lime an essential plant for culinary enthusiasts who enjoy cooking Thai, Indonesian, and other Southeast Asian dishes.

Distinctive Features and Uses

Leaves: The Kaffir Lime is most famous for its double-lobed, dark green leaves that release a powerful citrus fragrance when crushed. These leaves are a staple in Southeast Asian cooking, used in soups, curries, and stir-fries to impart a distinctive, tangy flavor. The leaves can be used fresh or dried, and they are often torn or bruised to release their essential oils before being added to dishes.

Fruits: The fruit of the Kaffir Lime is small, round, and green with a distinctive bumpy texture. While the fruit itself is less commonly used compared to the leaves, its zest is highly aromatic and is used in some recipes, particularly in curries and Thai curry pastes. The juice of the fruit is very acidic and is used sparingly in culinary applications.

Uses: The primary use of the Kaffir Lime is in cooking, where the leaves are an essential ingredient in many traditional Southeast Asian dishes. Beyond its culinary uses, the leaves and fruit are also valued for their essential oils, which are used in perfumes, soaps, and other aromatic products.