Soak overnite, simmer 2 to 3 hours covered until corn busts open.
Add salt last 15 min. Set aside. Save 1 cup broth.
Puree in a blender the chiles, tomatoes, and 3 cloves garlic.
Thin with liquid if needed. Mix in epizote.
Set aside.
Sauté the onion and garlic.
Add the rice, posole, puree add some liquid as needed. 5 minutes.