Fresh Onions are some of the oldest vegetables that were used by the first modern civilizations. They were grown in ancient Egypt, where their spherical internal structure was believed to be a symbol of eternal life Since then Egypt is one of the most popular countries of onions cultivation. Onions vary in size, shape, color, and flavor. The most common types are red, yellow, and white onions. The taste of these vegetables can range from sweet and juicy to sharp, spicy, and pungent, often depending on the season in which people grow and consume them. Onions are low in calories yet high in nutrients, including vitamin C, B vitamins, and potassium.