Salads are a terrific method to make vegetables your main dish. When Martha invites guests to lunch, she likes to make Frisée aux Lardons, a classic French salad made with spicy greens, crisp bacon, creamy poached eggs and warm vinaigrette. Her Chopped Salad is based upon a recipe she got from her child Alexis– a dish that's as gorgeous in presentation as it is delicious in taste. Next Martha reveals you how to master the Caesar Salad,…