Slow-Cooker Pork Carnitas

Bahan-bahan (12 porsi)

• 5 -6 pound pork roast
• 2 tablespoons olive oil
• 2 tablespoons kosher salt
• 1 teaspoon freshly ground black pepper
• 1 tablespoon dried oregano
• 2 teaspoons ground cumin
• 1 yellow onion, sliced thin
• 4 large cloves garlic, minced
• 2/3 cup orange juice