Slow Cooker Tacos Al Pastor

Bahan-bahan (6 porsi)

• 1 (5-pound) boneless pork shoulder roast (Boston butt), extra fat trimmed off
• 1 (12-oz.) bottle of beer (I used Modelo Negra, or use chicken stock if making this gluten-free)
• 2 chipotles in adobo sauce
• 1 fresh pineapple, peeled and cored, then roughly chopped
• 1/2 cup chopped red onion
• 3 tablespoons chili powder (not cayenne)
• 2 tablespoons fresh lime juice
• 2 tablespoons white vinegar
• 2 teaspoons kosher salt
• 1 teaspoon ground cumin
• 1/2 teaspoon black pepper
• corn tortillas, for serving
• optional toppings: crumbled goat cheese, (extra) diced fresh pineapple, chopped fresh cilantro leaves, chopped red onions, diced avocado, thinly-sliced radishes