Thumba Karawila may taste slightly bitter for some people, but this medicinal vegetable has brought sweet success to some 100 farmers in Anamaduwa and ahakumbukkadawala.The goodness of thumba karawila to be spread far and wideBusiness is booming, say farmers who sell a kilo of thumba karawala at Rs. 150.Thumba Karawila is known among villagers and ayurvedic physicians for its healing power for a variety of non-communicable diseases. Its botanical name is Momordica diocia. Called Vahisi and Karkufaki in Sanskrit; teasle gourd or spine gourd in English, it belongs to the ‘Kacurbitacease’ family.