Where can I find northern tofu and blood tofu for sale?

　　BloodTofu The ingredients for making blood tofu: Main ingredient: northern tofu 1000 grams,Pig's blood 500 grams, fatty pork meat 850 grams Seasonings: five-spice powder 15 grams, salt 50 grams Making blood tofu:White beans Tofu is put into a large basin and rubbed by hand to make fine pulp, then stirred in one direction until it becomes a paste;2. Then add pig's blood, table salt, five-spice powder;3. Cut fatty pork meat into strips 7 millimeters thick;4. Take about 50 grams of tofu pulp and shape it into an oval lump by hand;5. Stick three strips of fatty pork meat vertically symmetrically on the tofu core;6. Take another approximately 150 grams of tofu pulp to wrap outside, slightly squeezing it tighter;7. Do this for all and place each one in a steaming basket;8. Put the blood tofu cores in the steaming baskets in a warm place at 25℃ untilsweatingoccurs, then manually compress it 1-2 times to fully form;9. Then hang them up for air-drying over a fire pit, about 20 days later when the surface turns black, they are ready to eat;steam for about one hour before taking out and slicing on a plate. Tips for making blood tofu: 1. Stir-fry tofu pulp in one direction until firm, add pig's blood gradually to ensure even mixing;2. Place tofu cores in the steaming baskets with some distance between each other. Food interactions: Pig's blood: Do not eat with Soybeans, it may cause indigestion;Avoid eating with Kelp to prevent constipation. Fatty pork meat:Pork Should not be consumed with Chinese plums, licorice, crucian carp, shrimp, pigeon meat,Freshwater snail, apricot kernels,Donkey meat,Lamb liver, coriander, Soft-shelled turtle , lotus seeds , buckwheat, quail meat, Beef . Drinking tea in large quantities after eating pork is not advisable.Reference: Baidu Zhidao Eat buckwheat,pheasant meat, and beef together.Do not drink a lot of tea after eating pork. Eat together. Do not drink a lot of tea after eating pork. Reference: Baidu Zhidao