Dunked into a tub of clean water, these two fresh heads of green broccoli were undergoing a thorough cleansing prior to their addition to a healthy meal. Broccoli is a terrific source of vitamins A and C, as well as dietary fiber. The best way to cook broccoli is to steam, cook in the microwave or stir-fry with a little broth or water. These methods are better than boiling. Some of the vitamin and mineral content are lost from the vegetable and end up in the cooking water when they are boiled. Cooked broccoli should be tender enough so that it can be pierced with a sharp knife, and still remain crisp and bright green in color.