Puffball (Lycoperdon pyriforme) is a type of mushroom that is commonly found in meadows, pastures, and woodlands in North America and Europe. It is identified by its round, white fruit body that can grow up to 20 cm in diameter and a short or absent stem. The interior of the mushroom is filled with reproductive fragments that are released when pressure is applied. Puffball mushrooms have a nutty flavor and are used in culinary dishes, as well as for their potential medicinal properties.