On a Thanksgiving table laden with heavy starches and creamy carbs, a colorful, crunchy salad is a balm. A good piece, with fresh vegetables and well-prepared seasonal fruits, brightens everything around it while offering a welcome textural contrast. One bite of an elegant salad can cut through the richness of buttery potatoes and crunchy filling or custard, add a touch of juicy turkey meatiness and play up the flavor of tangy cranberry sauce.