Black sesame paste is a popular filling for Tāngyuán due to its rich and nutty flavor. These sticky rice balls are filled with black sesame paste, creating a delightful combination of flavors. The dough is made with glutinous rice flour and rolled into small balls before being filled with the black sesame paste. Boil them until they become soft and chewy, and serve them in a warm ginger syrup for a delicious dessert.