Yam

Everything about Yam :

Yam tubers can grow up to 2.5 meters in length^[2] and weigh up to 70 kg (150 pounds).

The vegetable has a rough skin which is difficult to peel, but which softens after heating. The skins vary in color from dark brown to light pink.

The majority of the vegetable is composed of a much softer substance known as the "meat". This substance ranges in color from white or yellow to purple or pink in ripe yams.