Trim off the outside leaves and cut the stalk even with the flower. Let it stand upside down in cold salted water for fifteen or twenty minutes to take out any insects there may be in it. Put it into a generous quantity of rapidly boiling salted water and cook it uncovered about twenty minutes or until tender, but not so soft as to fall to pieces. Remove any scum from the water before lifting out the cauliflower. If not perfectly white, rub a little white sauce over it. Serve with it a white, a Bechamel, or a Hollandaise sauce; or it may be served as a garnish to chicken, sweetbreads, etc., the little bunches being broken off and mixed with white sauce.