Building a salad can be a art. Each person creates his or her own just-right-mix of nutrient-packed & taste-bud-popping ingredients. I see 4 components: start with good greens, add a protein source, throw in lots of color & drizzle on the dressing. I go for a mixture of tender lettuce, black beans, avocado, mango & sunflower seeds with a vinaigrette. What are the makin's for your best green salad?