Colby is a type of cheese that originated in the United States, specifically in Colby, Wisconsin. It is a semi-hard cheese made from cow's milk and is known for its mild flavor and slightly open texture. Colby cheese is often used in sandwiches, salads, and as a snack. The cheese is typically orange in color, which comes from the addition of annatto, a natural coloring agent. Colby is similar to Cheddar cheese but has a softer texture and a more delicate taste. It can be enjoyed on its own or paired with various foods, making it a versatile choice for cheese lovers.