It is difficult to believe how the hardy, crunchy often rough looking exterior of raw beets can be transformed into something wonderfully soft and buttery once they are cooked. They have the highest sugar content of all vegetables, yet are very low in calories. The pigment that gives beets their rich, purple-crimson colour-betacyanin-is also a powerful cancer-fighting agent. Beets are an excellent source of the B vitamin, folate, and a very good source of manganese and potassium. Beets are a good source of dietary fibre, vitamin C, magnesium, iron, copper and phosphorus.