2. Put a little edible alkali and a little water into the tripe, put on gloves and rub it for a while, then scrape the tripe clean with a knife and scrape it clean in different directions.
3. Rinse tripe in medium tap water for several times, wash off edible alkali, add flour and salt, and knead with white vinegar1~ 2 minutes.
4. Use scissors to cut off the black impurities that can't be washed away from the tripe.
5, repeatedly wash the tripe with more tap water several times, so the white tripe will be handled. Add cold water without tripe, boil and rinse the water, and then proceed to the next step.