A bouillon cube is a small, compressed cube made from dehydrated broth or stock, often flavored with herbs, spices, and salt. It is used to quickly add flavor to soups, stews, sauces, and other dishes. Bouillon cubes are convenient because they have a long shelf life and can be easily dissolved in hot water to create a flavorful broth. These cubes are typically made from meat, vegetables, or a combination of both, and they come in various flavors, such as chicken, beef, and vegetable. Bouillon cubes are a popular choice for home cooks and chefs alike, providing a quick and easy way to enhance the taste of meals.