Other Vegetable Soups

Two of the greatest of all vegetable soups—tomato soup and onion soup—are made with just a single vegetable. Some cooks argue that tomatoes need the support of an onion and perhaps some herbs, but when tomatoes are at their best, the soup needs nothing more than the tomatoes themselves. French onion soup can be more solid than liquid, almost like a savory bread pudding, or it can be like a consommé, with just a small tangle of onion strands. It is usually somewhere in between, with a savory cheesy crust on top and plenty of onions and broth underneath.