Wheat is the most important grain of the northern hemisphere, but also used in Africa. Though mostly imported, it is also grown on a wide scale in South Africa and the Maghreb countries. The yam is a vegetable that should not be confused with the sweet potato. Yams come with a white flesh and texture, similar to a turnip. The flesh can be eaten boiled, roasted, baked, mashed or made into chips.
Yams are native to tropical regions throughout the world.
They are cultivated for their edible tubes, and come in all sizes. Texts and graphics may be reproduced freely, under the condition that their origin is clearly referred to, see Conditions .