3-4 lb slab of pork belly

2 lb pork tenderloin, cut to same length of the pork belly

spice rub

2 tbs Morton kosher salt

1 tbs 5 spice powder

1 tbs sugar

1/2 tbs garlic powder

1/2 tbs pepper

1/4 tbs ginger powder

optional brine solution

1/4 cup Morton kosher salt

1/4 cup sugar

4 cloves garlic, lightly crushed

1 tsp black peppercorns

1 tbs of season rub above

2 quarts water

additional supplies: butchers twine, roasting rack

Using clean small nail or safety pin, prick the skin side of the pork belly all over.  Rub the meat side of the pork belly along with the sides and ends generously with the spice rub. Rub off any spices that get onto the skin.  Line baking tray with foil and place on tray and refrigerate uncovered over night or up to 24 hrs.  If you are also brining the loin, prepare the solution in a non-reactive plastic container until dissolved and brine overnight (we take it out of brine overnight, about 8 hrs, regardless if we dry the pork for 24hrs).  If you don't brine the loin, rub generously with spices and cover refrigerated with plastic wrap. 

On day of cooking, preheat oven to 425 degrees. Take your pork belly and loin and tie in a roast (for examples look here and here) trimming any excess if necessary and rub additional spices on the ends of the loin. Tie it snug but not too tight.  Place on roasting rack and roast until skin is golden brown (if necessary, rotate the roast periodically to make sure there is even browning). Depending on size of your roast and thickness of the cuts, this takes about 45 minutes or so.

When the skin is golden brown, turn the oven to high broil.  Place the porchetta as close as possible to the heating element and within minutes, the skin will become bubbly and crackle.  Rotate as necessary to make sure skin is evenly bubbled and crackly. Do not leave the porchetta unattended.  When finished, you can double check the internal tempurature of the loin with meat thermometer (145 for medium).  Allow porchetta to rest about 15-20 minutes before carving.  After carving, it's also helpful to crack the pieces of skin with the the tip of your knife for easier consumption.