Yams (Dioscorea spp. ) is a creeping tropical plant, the vine, the tubers of which, having an enormous energy value, rich in vitamins and mineral salts and are widely used in food in many countries along with the potatoes. Yams - not sweet potatoes, though something similar to it in taste. Portuguese "inhame" taken from the language of the African peoples "yamyam" what it means is. There is a Russian word yum-yum, of course of direct relevance to this very interesting plant. The tubers of Yam is poisonous substances contained in raw tubers, causing irritation of skin and mucous membranes. The poison is destroyed by heating, so before use or before further cooking of any dishes of yams must be pre-boiled. If someone is interested in the process of preparation and cooking of yams, as they say, welcome!