Nutritious, pleasing textures, easy to make in advance, and filled with honest flavors, homemade soups are infinitely versatile, ranging from delicate first courses to hearty main-dish chowders. Chef Ian Algerøen begins with creamy, aromatic Four Onion Soup. Then try contemporary Grilled Corn Chowder, and refreshing Grilled Vegetable Gazpacho, the chilled "garden soup" of Spain.