6 pounds
                        butterflied pork shoulder
                                        
                        
                        1 1/2 tablespoons
                        coarse salt
                                        
                        
                        1 1/2 tablespoons
                        black peppercorns
                                        
                        
                        1 tablespoon
                        fennel seed
                                        
                        
                        1 tablespoon
                        coriander
                                        
                        
                        1 tablespoon
                        red pepper flakes
                                        
                        
                        5
                        garlic cloves, mashed up
                                        
                        
                        1 tablespoon
                        chopped rosemary
                                        
                        
                        1 tablespoon
                        finely grated orange zest
                                        
                        
                        3 tablespoons
                        olive oil
                                        
                        
                        3
                        bay leaves
                                        
                        
                        1
                        piece pork skin, large enough to cover the shoulder, like a pashmina, or 9 thin slices pancetta
                                        
                        
                        1/2 cup
                        good red wine vinegar