Lagenaria siceraria

About

Calabash is a vine in the family Cucurbitaceae which is grown for its fruit. It is native to tropical Africa, and cultivated across the tropics. It can be either harvested young to be consumed as a vegetable, or harvested mature to be dried and used as a kitchen utensil, beverage container or a musical instrument. When it is fresh, the fruit has a light green smooth skin and white flesh. It is also known as bottle gourd, white-flowered gourd, long melon, birdhouse gourd, New Guinea bean, New Guinea butter bean or Tasmania bean.

Summary from Wikipedia