Swiss beets, also known as chards, are a leafy green vegetable that is a member of the beet family. They have a mild flavor and are often used in salads or cooked as a side dish. The leaves are large and can be either green or red in color. The stems are thick and crunchy and can be eaten raw or cooked. Swiss beets are a great source of vitamins A, C, and K, as well as minerals such as iron and calcium.