Makrut Lime Leaf

Makrut lime leaf is the spice produced from the double-lobed leaves of the Citrus hystrix, a thorny tropical evergreen tree in the citrus family.

Makrut lime leaf

CLASSIFICATION:

  • KINGDOM:  Plantae
  • CLADE:  Tracheophytes
  • CLADE:  Angiosperms
  • CLADE:  Eudicots
  • CLADE:  Rosids
  • ORDER:  Sapindales
  • FAMILY:  Rutaceae
  • GENUS:  Citrus
  • SPECIES:  C. hystrix

 

REGION OF ORIGIN:  Southeast Asia. While its precise origin is unclear, Citrus hystrix was likely initially domesticated in the ancient Indo-Malayan region, including present-day Thailand, Laos, Cambodia, Indonesia, Malaysia, and the Philippines. It thrives in many warm, humid climates with fertile soil, so the tree has now been cultivated in tropical regions worldwide.

 

PART & COLOR:  The double-lobed leaves are a glossy, deep green on top with a porous, matte, light green underneath. The small, bumpy limes themselves are equally prized. The zest of the fruit is renowned for its intense lime flavor and the juice, though limited due to the lime’s low yield, is highly acidic and used sparingly in marinades, dressings, and sauces.

 

HARVEST:  Citrus hystrix is evergreen, so leaves can be harvested year-round. However, they are most flavorful when young and tender, so peak season tends to align with the warmer months when new growth is most abundant. Harvesting leaves is challenging as they must be hand-picked while navigating around the branch's long thorns.

AROMA & FLAVOR PROFILE

Makrut lime leaf is a powerhouse. On the surface of every leaf are hundreds of little bumps that contain sacs of its volatile oils. Rubbing, bruising, or tearing a leaf releases them, filling the air with an invigorating aroma - a vibrant burst of lime zest, mandarin orange, and lemon peel, accompanied by subtle floral and grassy notes.

The fragrance is coupled with an intense citrusy flavor that has a sharp, slightly spicy edge. Its taste is distinctly lime-like, but with a unique complexity that transcends a typical lime’s sourness. A hint of bitterness balances out its sweetness, and an herbal quality adds depth. When dried, the scent is more muted and subdued, lacking the bright quality of fresh leaves. Dried leaves retain the spice’s essential flavor for up to a year (versus a week for fresh leaves), but it is less intense and nuanced and has a woody, hay-like undertone. Still, the convenience of having dried leaves on hand shouldn't be overlooked.

CULINARY USES

These potent leaves are indispensable to Southeast Asian cuisine. In Thailand, they are a staple in green and red curries and soups like tom yum and tom kha gai. They add brightness to Indonesian coconut dishes like rendang, soto, and nasi uduk. They also provide a critical zest to Malaysian spicy noodle soups like laksa and rice dishes like nasi lemak. They are crucial to traditional Cambodian dishes like amok trey, a steamed fish curry wrapped in banana leaves, and Filipino recipes like kinilaw, a raw seafood dish not unlike ceviche.

Fresh leaves are often preferred for their intense flavor and are torn, sliced, chopped, or bruised to release their oils before being added to stir-fries, soups, salads, rice, broths, oils, and teas. Remove the central vein if you find it to be too tough. Dried leaves can infuse liquids similar to bay leaf or curry leaf. They can also be ground into a powder and used as a spice rub or seasoning.

Dried makrut lime leaves

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