Cut the rind off the belly. In a Dutch oven, or oven proof pot, combine the pork with rosemary (I used 3 large sprigs), crushed cloves of garlic, and bay leaves and season generously with salt, black pepper and nutmeg - most recipes call for a bouquet garni, not just rosemary, or thyme and parsley instead. But hell. Here's to living dangerously, eh?
Cover with a cup full of water, and bring to a low simmer on the stove. Not quite bubbling. Meanwhile, preheat the oven to gas mark 2. Cover, and place in the heated oven. Read a book. Watch TV. Call you friends. Cooking times vary from 2 to 6 hours. Bake bread to go with your rillette. I cooked by eye, as it were, taking the pot out of the oven every 40 minutes or so, stirring to make sure it didn't stick, and eventually, forking the thicker parts of meat apart to allow it to cook a little more quickly.
The fat should largely melt to a clear liquid, and the pork cook until meltingly soft - it should fall apart in the pot when gently forked. When that happens, drain and reserve the liquid. Discard the herbs, and allow the pork to cool enough to handle. Best to keep it a little warm though. With your hands, or two forks, shred the meat into, depending on your taste, pistachio sized piece, or small threads of pork. Or less even. Taste the pork, and add herbs, salt, pepper - whatever you used originally - to taste. Place in a terrine dish (no grease or bacon required. Any more pork might actually kill you) or a regular bowl, or container, and compress. For ten minutes, or two hours. Again, your preference is, I think, prime, though I only loosely compressed it, and the dish soaked up huge amounts of fat.
Finally, pour over some of the reserved fat to form a thin layer of fat on top of the crock, terrine dish, bowl.....and leave covered, in the fridge, for three days. It can keep for ten days without the fat covering, and longer with.
Eat, with pickled cornichons, or black olives, on bread. To serve, take what you want from the terrine. Allow to come to room temperature, and serve.