Onions

The onion is an underground, eadible bulb that grows in the plant that bears the same name. It is a vegetable of Asian origin cultivated since 6,000 B.C. From Asia it spreaded to Europe, and from there to America. At the moment, there is a wide range of varieties, that can be classified according to the colour of the bulb, the shape, size, use, origin and earliness. It is used in many ways for cooking, both raw and cooked. Moreover, it has various medicinal properties.