bitter melon, (Momordica charantia), vine in the gourd family (Cucurbitaceae) that grows throughout India (but especially in Kerala), China, and Southeast Asia.
Bitter melon, also called bitter gourd or bitter cucumber, is gnarled, covered in warts, and shaped like a rather pointy cucumber. It is picked when green, before it ripens, while it is still hard. All food cultures that enjoy its intense flavour scoop out the seeds in the middle to stuff it, but bitter melon is more commonly chopped.
In Vietnam bitter melon is typically sliced and served raw. In India and China cooks often attenuate its bitterness either by pre-salting it and squeezing out the excess juice or by parboiling. Chinese cooks work to balance its taste with other sweet, sour, and salty flavours, for instance by pairing it with beef and black-bean sauce. In Sri Lanka, coconut milk tempers the bitterness, while there and in India the gourd is often cooked in a curry sauce. In Malaysia it is sliced very thinly and coated, whether fried or raw, with lime juice, while the southern Indian curry dish pavakka theeyal tames bitter melon with the gentle acidity of tamarind juice. Bitter melon is not often blended with other vegetables, but it makes a fine spicy pickle with asafoetida and mango.
In South Asia, bitter melon is a traditional treatment for diabetes. Claims have been made for its efficacy in reducing fevers, treating osteoarthritis, and impeding the growth of certain cancers, but these have not been clinically verified.