In addition to highlighting for its color, it has a sweet taste, and more pronounced than other types of onions. The red onion is highly appreciated, of large and globose bulb, grown in spring and summer. Comes from Italy, this is the ideal type of onion for salads. It contains vitamin C, potassium, calcium, phosphorus, zinc, antioxidants such as flavonoids, compounds such as anthocyanins and quercetin.