Clean the Chitterlings: Rinse thoroughly under cold running water, separating each piece and removing any remaining debris or excess fat.
Vinegar Soak: Place chitterlings in a large pot, cover with cold water and vinegar, soak 30–45 minutes. Drain and rinse again.
Start Cooking: Add chitterlings back to the pot with fresh water or broth. Bring to a boil, then reduce to a gentle simmer.
Season the Pot: Add onions, garlic, bay leaves, salt, black pepper, paprika, onion powder, garlic powder, and cayenne.
Slow Simmer: Cover partially and simmer on low for 3–4 hours, stirring every 30 minutes and adding hot water if needed.
Taste & Adjust: During the last 30 minutes, adjust salt and heat to preference.
Rest & Serve: Let rest 10 minutes off heat before serving hot with broth.