Here's a traditional and flavorful recipe for pulled pork that you can make in a slow cooker. This recipe works well with both pork shoulder and pork butt, as they are both well-marbled, flavorful cuts that become tender and juicy when slow-cooked.

Ingredients:
- 4-5 lbs pork shoulder (also known as Boston butt) or pork butt (also known as Boston shoulder)
- 1 tablespoon smoked paprika
- 1 tablespoon garlic powder
- 1 tablespoon onion powder
- 1 tablespoon dried oregano
- 1 tablespoon cumin
- 1 teaspoon cayenne pepper (optional, for heat)
- 2 teaspoons salt
- 1 teaspoon black pepper
- 1 cup chicken or beef broth
- 1/2 cup apple cider vinegar
- 1/4 cup brown sugar
- 1 onion, sliced

Instructions:
1. In a small bowl, mix together the smoked paprika, garlic powder, onion powder, dried oregano, cumin, cayenne pepper (if using), salt, and black pepper.

2. Rub the spice mixture all over the pork shoulder or pork butt, making sure to coat it evenly.

3. Place the sliced onion in the bottom of the slow cooker and put the seasoned pork on top.

4. In a separate bowl, whisk together the broth, apple cider vinegar, and brown sugar. Pour this mixture over the pork.

5. Cover the slow cooker and cook on low for 8-10 hours, or until the pork is tender and easily shreds with a fork.

6. Remove the pork from the slow cooker and transfer it to a large bowl. Shred the meat using two forks, discarding any excess fat.

7. Strain the liquid from the slow cooker and skim off any excess fat. Pour some of the strained liquid back over the shredded pork to moisten it, as desired.

8. Serve the pulled pork on buns with your favorite barbecue sauce, coleslaw, or other toppings.

Note: Both pork shoulder and pork butt will work well in this recipe. Pork butt tends to be slightly more flavorful and marbled, while pork shoulder is a bit leaner. However, both cuts will result in tender, juicy pulled pork when slow-cooked.

Variations:
- For a Cuban-inspired twist, add 1 teaspoon of ground coriander and 1 teaspoon of dried thyme to the spice rub, and substitute orange juice for the apple cider vinegar.
- For a spicier version, increase the amount of cayenne pepper or add 1-2 chopped chipotle peppers in adobo sauce to the slow cooker.
