The tripe should be inflated first to prevent it from shrinking. Technology of tripe: firstly, clean tripe 100 kg with 1% sodium carbonate warm water solution. Add 1- 1.6 kg of phosphorus-rich couplets (foaming agent for intestine and stomach water) into 100 kg of water, stir and dissolve, then add beef venetian blinds, and marinate for 10- 15 hours. Then pour the pickling solution and tripe into the pot, raise the temperature to 80 degrees with high fire, add 30 grams of deodorized seasoning powder, cook until it is seven-cooked (about 15-30 minutes), turn off the fire and simmer for 2-5 hours, then take it out of the pot or steam it in a cage 15-30 minutes. ? (according to the time of stewing? Adjust the variety of animal belly meat products), pay attention to observe and prevent stewing!