Tacos al Pastor

Ingredients

• 1 pound (450g) boneless pork shoulder, thinly sliced (about 1/8-inch thick)
• 2 tablespoons achiote paste
• 1/4 cup pineapple juice
• 2 tablespoons white vinegar
• 2 cloves garlic
• 1/4 medium onion
• 1/2 teaspoon ground cumin
• 1/2 teaspoon dried oregano
• 1/4 teaspoon salt
• 1/8 teaspoon black pepper
• 1 tablespoon vegetable oil
• 1 cup fresh pineapple, finely diced
• 6-8 small corn tortillas
• 1/4 red onion, finely diced, for topping
• 2 tablespoons fresh cilantro, chopped, for topping
• 1 lime, cut into wedges, for serving