Ingredients: 6 pounds pork shoulder or boneless country style ribs 1 tablespoon garlic salt 2 teaspoons freshly ground black pepper 3 tablespoons extra virgin olive oil, divided 1 large onion, finely diced 4 medium cloves garlic, minced 2 28-ounce cans San Marzano tomatoes 1 6-ounce can t…