It's bumpy and ridged, and the inside is hollow with white seeds. Known for its strong bitterness. There are a few ways to reduce the bitterness, such as soaking in salt water before cooking or removing the white seeds. The vine is the edible part, although the young shoots and leaves can also be eaten.

Example

1. Bitter melon looks like a bumpy green monster.
2. Do you want to try some bitter melon with dinner?
3. Bitter melon can be sliced and stir-fried with rice and tofu for a healthy meal.