Chestnut cookies are sweet, nutty cookies made from water chestnut flour, which is a gluten-free flour made from ground chestnuts. The dough is typically mixed with milk butter, raw sugar (khand), before being shaped into small balls and baked until golden brown. Chestnut cookies have a crispy exterior and a soft, chewy interior, with a flavour that is slightly sweet and nutty. They are often enjoyed as a snack or dessert and are a healthier alternative to traditional cookies because of their high fiber and protein content.