Whole white mushrooms, also known as button mushrooms, are a type of edible mushroom that are commonly used in cooking. They have a round, white cap with a smooth surface, and a white or off-white stem. The cap and stem are connected by a thin, delicate membrane. Whole white mushrooms have a delicate flavor and a firm texture, making them suitable for a variety of dishes such as soups, salads, sauces, and stir-fries. They are also a good source of vitamins and minerals, including potassium, niacin, and phosphorus. When cooked, white mushrooms can become tender and slightly chewy, and their flavor will become more pronounced. They are also a popular topping for pizzas and are often used in vegetarian dishes as a meat substitute.