Best Vegetable Soup is a usually savory appetizer soup made with one or more vegetables like cabbage, carrot and cauliflower. Ginger and garlic seasoning may be used in the soup. The seasonings are sautéed in butter. Later vegetables are sautéed along with them and cooked in stock or water. All purpose flour or oat flour may be used as a thickener for the soup. Best vegetable soups are preferably served warm during a cold winter dinner.