Cauliflower is a cruciferous vegetable that is naturally high in fibre and B-vitamins. It provides antioxidants and phytonutrients that protect against cancer. The pinkish hue is due to a compound called glucoraphanin, which is also found in common green broccoli. In your body, glucoraphanin can be converted to compounds with anticancer properties. Store whole heads of cauliflower in a loosely sealed plastic bag in the refrigerator for 4 to 7 days.