- In a bowl, combine the chili powder, cumin, oregano, and paprika; season to taste with salt and pepper. - 1 tbsp. chili powder, 1 tbsp. ground cumin, 2 tsp. dried oregano, 1 tsp. paprika, Sea salt and freshly ground black pepper 
- Rub the pork shoulder evenly with the spice mixture. - 4 to 5 lbs. pork shoulder 
- Place the pork in a slow cooker and top with the garlic, onion, and jalapeno. - 1 onion, 4 garlic cloves, 1 jalapeño 
- In another bowl, whisk together the tomato paste, orange juice, and lime juice. - 2 tbsp. tomato paste, ¼ cup orange juice, ¼ cup fresh lime juice 
- Pour the sauce over the pork, cover, and cook on low for 6 to 8 hours. 
- Once the pork is cooked through, shred the pork using a fork and place it back in the slow cooker mixing it with all the juices from the cooking process. 
- Grill the shredded pork on a preheated grill, or in the oven at 475 F for 10 to 12 minutes, to get a nice charred texture.