Leavened flatbread is a type of bread that is made with yeast or another leavening agent, such as baking powder, to make it rise. Two popular types of leavened flatbread are naan and NAN. Naan is a type of flatbread that originated in the Indian subcontinent and is usually cooked in a tandoor oven. NAN is a type of flatbread that is also found in the Indian subcontinent, but is usually cooked on a griddle. Both naan and NAN are popular accompaniments to curries and other dishes.