There are many methods as follows:
Wash with flour and white vinegar, especially for cleaning the recessed parts.
Wash the tripe first, and then wash it with salt, Half a bowl of vinegar, scrub it repeatedly, and wash it with cold water
Soak it in warm water and sprinkle it into the alkali surface. Soak it for about half an hour and start washing it. This way you can wash away the smell of the tripe and wash it well. clean.