Look for green outer leaves (or jacket as their called) and tightly packed florets. The purple and orange varieties have a slightly sweeter flavor than the white variety alone. To amp up the sweetness of all three (while keeping colors intact), break the heads up into small clusters and gloss with extra virgin olive oil. Sprinkle with salt and pepper and roast at 375 for about 35-40 minutes, or until the edges are caramelized. Then proceed with any recipe - using them in soups, pasta sauces, add to salads, gratins or custards. Nowadays cauliflower is being served as an entree - the sky's the limit with this healthful, tasty, easy-to-cook crucifer.