Chestnuts are edible nuts that come from trees in the genus Castanea. They have a smooth, shiny brown shell and are typically harvested in the fall. Unlike other nuts, chestnuts are low in fat and high in carbohydrates, making them a popular choice for various dishes, especially during the holiday season. These nuts can be eaten roasted, boiled, or ground into flour. Chestnut trees are also valued for their wood, which is used in furniture and construction. In many cultures, chestnuts are associated with festive traditions, such as chestnut roasting during winter celebrations.