Button mushrooms, also known as white mushrooms, are small, round fungi that are commonly used in cooking. They have a mild flavor and a smooth, white cap, making them versatile for various dishes. These mushrooms are often found in salads, soups, and stir-fries. Button mushrooms are rich in nutrients, including vitamins B2 and B3, as well as minerals like selenium and potassium. They are low in calories and can be enjoyed raw or cooked. Their availability year-round makes them a popular choice in many kitchens around the world.