For all the chocolate lovers out there, this variation of Tāngyuán is a must-try. Chocolate-filled sticky rice balls combine the traditional dessert with a rich and indulgent chocolate filling. To make these delicious treats, prepare the dough using glutinous rice flour and water. Instead of using sweet paste fillings, opt for your favorite chocolate, such as dark chocolate, milk chocolate, or even white chocolate. Break the chocolate into small pieces and use them as the filling for the rice balls. Roll the dough into balls, flatten them, and place a small piece of chocolate in the center. Seal the dough and roll it back into a ball shape. Boil the filled rice balls until they float to the surface, and they are ready to be enjoyed. The chocolate-filled Tāngyuán offer a delightful combination of textures, with the chewy outer layer and the melted chocolate filling. They are a decadent dessert option that will satisfy any chocolate craving.