Pork Tacos with Mango Salsa

Ingredients

• 2 tablespoons lime juice
• 2 tablespoons white vinegar
• 3 tablespoons chili powder
• 2 teaspoons ground cumin
• 1-1/2 teaspoons salt
• 1/2 teaspoon pepper
• 3 cups cubed fresh pineapple
• 1 small red onion, coarsely chopped
• 2 chipotle peppers in adobo sauce
• 1 bottle (12 ounces) dark Mexican beer
• 3 pounds pork tenderloin, cut into 1-inch cubes
• 1/4 cup chopped fresh cilantro
• 1 jar (16 ounces) mango salsa
• 24 corn tortillas (6 inches), warmed
• Optional: cubed fresh pineapple, chopped avocado and queso fresco