Gruyère is a type of cheese that originates from the Gruyères region in Switzerland. It is a hard cheese made from cow's milk and is known for its rich, nutty flavor. Gruyère is often used in cooking, particularly in dishes like fondue and French onion soup, due to its excellent melting properties. The cheese is aged for a minimum of five months, which enhances its taste and texture. Gruyère has a smooth, pale yellow rind and a firm interior with small holes. It is a key ingredient in traditional Swiss cuisine and is enjoyed worldwide for its versatility and flavor.