Step 1: Core tomatoes and blanch 1 minute, then plunge into ice water and slip off skins.
Step 2: Peel off tomatillo husks and rinse.
Step 3: Coarsely chop tomatoes, tomatillos and onion and add to a saucepan along with garlic, and seeded peppers. Stir in chipotles, adobo sauce, salt, cumin seed, vinegar and water.
Step 4: Bring mixture to a boil, then reduce heat and simmer until onion is soft, about 20 minutes. Allow it to cool.
Step 5: Puree mixture in batches in a blender or food processor until smooth.
Step 6: Return sauce to pan and cook until mixture is as thick as you like, maybe another 15 minutes or so, keeping pan covered with a lid vent open or using a splatter screen.
This page is built for your convenience in the kitchen.
If you want helpful tools, tips and recipes from our community of real cooks, please consider signing up.
Oh... And one more thing... We also have some pretty wild forums.