Cauliflower can be served cooked or raw. Peel off stem leaves. Turn cauliflower upside down. Cut the stem just above where the florets join together. Separate the florets into equal sized pieces. Cut if necessary.
When cooking cauliflower, you may leave the head whole. Rapid cooking time not only reduces the odorous sulfur compounds but also preserves crispness, color, and reduces the loss of nutrients that will leach into the cooking water when vegetables are overcooked. Steaming and microwaving cauliflower will better preserve its vitamin content, especially the B vitamins, than if it is boiled.
To microwave cauliflower: Put 2 cups of florets in a shallow microwavable dish, or cover a whole head of cauliflower with plastic wrap. For florets, cook for 3 minutes on high, then let stand for 2 minutes. For whole cauliflower, cook on high for 3 minutes, turn head over, and cook for an additional 2 to 4 minutes. Let stand for 3 minutes. To steam cauliflower, place it in a steamer basket, and then place in a pot with 2 inches of water. Cover and steam. Florets will take 3 to 5 minutes to cook. A whole head of cauliflower (1-1/2 pounds) will take 15 to 20 minutes to cook, but begin checking for tenderness after 12 minutes.