1 large onion, quartered
2 tablespoons chopped fresh oregano
1 tablespoon ground cumin
2 teaspoons ground ancho chile pepper
2 teaspoons salt
2 teaspoons ground black pepper
olive oil
1 tablespoon white wine vinegar
1 (3 pound) boneless pork loin roast
1 lime, cut into wedges
Place the garlic, onion, oregano, cumin, chile pepper, salt, and pepper into a blender. Pour in the olive oil and vinegar. Puree until smooth. Spread this mixture all over the pork loin, and place into a slow cooker. Cook on Low until the pork is fork tender, 6 to 8 hours. When ready, cut the pork into chunks, or shred; garnish with lime wedges to serve.