White cauliflower and green broccoli make a lovely color combination as a side dish on your dinner table. These vegetables, which are cousins by nature, have similar sweet rich tastes. Unfortunately, this family tastes and smells a bit like sulfur — imagine rotten eggs — when mishandled. Choose broccoli and cauliflower heads that are firm, with tight buds and no discoloration. Most importantly, avoid overcooking your vegetables. It brings out the sulfur odor.