Sticky tofu-a common staple food in Northeast China in winter. In winter, the northeast people will grind rice into flour, put it on a hot kang, cook a pot of adzuki beans after cooking, boil adzuki beans, add enough sugar and make them into balls. Then, the red bean balls are steamed on the cooked yellow rice bread in the pot, and the bean paste buns are ready. In the past, people in the northeast used to cook these two cauldrons and then put them outdoors for freezing. After a long winter, the bean paste buns get hot after eating, which is very convenient and delicious. This is a delicious food for the northeast people in winter. Nowadays, bean paste buns are very popular staple snacks in many peasant restaurants.