Menudo Rojo (Red Menudo)

Step 1
Make the soup: Bring a large pot of water to a boil. Add tripe, reduce the heat, and simmer, periodically skimming off fat, for 2 hours; drain.

Step 2
Fill the pot with fresh water, and simmer tripe for 2 more hours; drain again.

Step 3
Pour 1 gallon water over tripe in the pot; bring to a boil. Stir in onion, garlic, red pepper, oregano, salt, and black pepper. Reduce the heat and simmer for 1 hour.

Step 4
Meanwhile, set an oven rack about 6 inches from the heat source and preheat the oven's broiler. Arrange ?rbol chiles on a baking sheet.

Step 5
Broil chiles in the preheated oven just until they begin to scorch, about 2 minutes. Remove from the oven, slit lengthwise, and remove seeds.

Step 6
Place ?rbol chiles into a blender or food processor with japones chiles; blend until minced.

Step 7
Stir chile mixture into the pot and continue cooking over low heat for 2 hours. Mix hominy into the pot and cook for 1 hour.

Step 8
Serve soup with cilantro, onion, and lime wedges.