Here's my recipe, which is basically Mario Batali's, with my own modifications based on absent-mindedness:
For every 1 lb of fresh pork belly--or jowl (skin removed),
1/4 C. Sugar
1/4 C. Salt
15 black peppercorns, crushed (or a mixture of black and white)
2 bay leaves, crushed
leaves from a couple branches of thyme
In a shallow bowl with lid or plastic container rub the salt and sugar all over the belly, then the spices. Cover and refrigerate for a week. The salt and sugar will melt into a brine, and you will want to turn the pork once or twice in the week. I've gone over 10 days in the brine as a result of totally forgetting about it.
After a week or so, remove the meat and shake off the liquid. If it's fall, winter, or early spring (days are below 60 and nights are colder) and you have an unheated garage, hang your meat to cure. I have no good advice on how to do it, having struggled with threading a piece of kitchen twine through the meat using a metal kebab and narrowly avoiding stabbing myself in the process. I'm sure that you will be smarter than me. I hang my meat from the bicycle that hangs from the hooks of the rafters of my garage. In the warmer weather, I will make some kind of pork hammock in the fridge. The meat needs to hang for about 4 weeks, until it is firmer and a bit darker than when you began. Again, you may end up forgetting about the meat and letting it go for 5 weeks instead, but trust yourself that you will know if has gone bad by the evidence of mold or an intolerable smell. But since I've experienced neither, you'll have to tell me about it.
Jowl Before
Jowl During
Jowl After