Ensure that all cooking surfaces and materials are sanitized after cleaning the chitterlings before cooking.
- Put the chitterlings in a pot and add water, then let it reach a full boil.
- Add the onions, garlic, salt, and red pepper flakes, reduce the heat to a simmer, and leave it for three to four hours.
- Serve the chitterlings when they reach the desired tenderness.
You can also check this video for more ideas.