Authentic Thai Recipe Ingredient: Senna siamea
ขี้เหล็ก (Khilek; Kee lek)
Senna siamea, Khilek in Thailand, is also known as Kassod Tree or Cassod Tree. Is a legume native to South and Southeast Asia, although its exact origin is unknown. The leaves, tender pods and seeds of Khilek are edible, but they must be previously boiled and the water discarded. In Thailand, one of the most well-known preparations using this plant is Kaeng khilek.