Getting It On With Greens

Getting It On With GreensSalads? You mean tossed lettuce and tomato wedges, right? Not this time! Oh, you're doing the health-food number: alfalfa sprouts, soybeans, dandelion greens ... that stuff. No way! What we have in mind are main-dish salads--zesty concoctions that are eminently satisfying but not heavy. Hearty salads make a lot of sense--and not just as summer eating. They're composed rather than cooked, often with last-minute pickups from the deli and greengrocer, plus any cold treasure...