Place ancho chiles in a bowl; cover with water. Let stand 10 minutes. Drain; remove and discard stems and seeds.
Using a food processor, process seeded chiles, tomatoes, onion, almonds, chocolate, raisins, stock, cumin, sauce, cinnamon, chipotle chiles and garlic until smooth.
Sprinkle chicken with salt; place in a 6-quart slow cooker.
Add tomato mixture. Cover and cook on low for eight hours. Place chicken on a cutting board; remove bones.
Reserve 2 cups sauce for another use. Shred chicken into large pieces; return to slow cooker.
Using one tortilla at a time, heat tortillas over medium-high directly on burner to lightly char tortilla (approximately 15 seconds per side).
Top tortillas with chicken mixture, cheese and cilantro. Serve with lime wedges.
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