Gruyère cheese is a hard Swiss cheese named after the town of Gruyères in Switzerland. It is made from cow's milk and has a smooth, creamy texture with a slightly nutty flavor. The cheese is typically aged for about five months, which enhances its taste and aroma. Gruyère is commonly used in various dishes, including the famous Swiss fondue and French onion soup. It melts well, making it a popular choice for cooking and baking. The cheese is often characterized by its pale yellow color and small holes, which develop during the aging process.