Combine all of the cure ingredients except the 1 tablespoon of black pepper for dusting in a bowl. Stir well.
Rub the cure all over the pork belly.
Place the pork belly into a zip-top plastic food storage bag.
Refrigerate for 5 days, flipping the meat and redistributing the cure as it firms.
Remove the pork belly from the bag and rinse well with cold water to remove the cure.
If weighing for doneness, weigh the belly now and record it.
Dust the inside with the remaining black pepper, then roll the belly tightly with the fat or skin side facing outward. Tie tightly with butcher's twine.
Hang the meat in your refrigerator or curing chamber with good airflow around it.
Let it hang for 2 to 3 weeks, or until it has lost 30 percent of its recorded weight.
NOTES
Use Instacure #2, not #1. Pancetta is a longer dry-cured project, so this is the correct curing salt for the job.
Wild boar belly dries faster. It is usually leaner than farmed pork belly, so start checking it earlier during the drying stage.
A scale helps. Time gives you a range, but weight loss gives you a better read on doneness. Aim for about 30 percent weight loss after curing.
Roll it tight. A tight roll dries more evenly and gives you cleaner slices later. If it loosens up, tie it again.
A regular refrigerator works. Pancetta is one of the easier cured meats to make at home as long as it has space and airflow around it.
You can cook it after the cure. The extra 2 to 3 weeks of drying are for better texture and more concentrated flavor.
Wrap it well after drying. Keep it in the refrigerator for short-term use or freeze it in smaller pieces so you only thaw what you need.