Chestnut roasting is a traditional method of cooking chestnuts, a type of nut that grows on trees. This process typically involves heating the nuts over an open flame or in a specialized roasting pan. The heat causes the outer shell to crack, making it easier to peel and eat the soft, sweet nut inside. Roasted chestnuts are often enjoyed during the colder months, especially around Christmas and Thanksgiving. They are commonly sold by street vendors in many cities, filling the air with a warm, nutty aroma. This seasonal treat is popular in various cultures and is often associated with festive gatherings.