Beef stock is a flavorful liquid made by simmering beef bones, meat, and vegetables in water. This process extracts rich flavors and nutrients, resulting in a base that enhances soups, stews, and sauces. Common ingredients include onions, carrots, and celery, which add depth to the stock. The cooking time for beef stock typically ranges from several hours to overnight, allowing the flavors to develop fully. Once strained, the stock can be used immediately or stored in the refrigerator or freezer for later use. It serves as a versatile foundation in many culinary dishes.