Cauliflower offers significant vegetable protein along with Vitamins A, B-complex, C and E, as well as a variety of minerals. Refrigerate fresh cauliflower in a plastic bag for up to 2 weeks. To prepare, soak the head upside down in cold water to clean thoroughly. Remove tough outer leaves. Trim off any blemishes. Cauliflower is excellent served raw on a veggie tray with dip. To cook cauliflower, steam whole heads for 15-20 minutes or 5-10 minutes for florets. Cook until just tender, but not overly soft. Excessive cooking will decrease the nutritional value. Cauliflower can also be sauteed or stir-fried with other colorful vegetables for a beautiful presentation.