Optional: Put on gloves. Pour a small splash of whisky over the pork belly, just enough to coat it lightly. This gives the meat extra flavor without overpowering it.
Sprinkle salt evenly across the pork belly, then place the lean pork fillet in the center. Season the fillet with a little more salt to make sure every layer is perfectly flavored.
Next, add granulated garlic over the surface, as much as you like. Sprinkle the dried herbs evenly so they cover the meat from edge to edge.
Strip the rosemary leaves from the stems and scatter them generously over the top. Add plenty of fennel leaves too, avoiding the hard stems, until the entire piece is beautifully covered. Finish with freshly ground black pepper to taste.
Find the center of the pork belly and carefully slide an aluminum rod through it. Roll the meat around the rod to form a tight cylinder.
Use a trussing needle to secure the roll. Start from the middle, threading the butcher’s string through to the other side, and tie it tightly like you would a shoelace. Keep sewing and tying until the porchetta is fully closed around the rod.
If threading with a needle is tricky, simply slide pieces of string under the roll, pull them up, and tie them firmly. The goal is to keep the shape tight and secure. Trim off any extra string when you’re done.
To close the opening, insert the trussing needle into the skin on one side and sew it shut. Add strings from top to bottom and around the porchetta to fully secure it.
If you plan to cook it later, wrap the porchetta first in baking paper and then in plastic wrap. It can stay like this in the fridge until you’re ready to roast. If cooking immediately, skip this step.
Place a roasting rack inside a deep baking tray. Set the porchetta on the rack, seam side down, with the aluminum rod still inside.
Pour four bottles of beer into the tray. This keeps the meat juicy and adds incredible flavor.
Cook the porchetta on the bottom rack of a conventional electric oven, where it’s furthest from the top heat. The total cooking time is about three and a half hours:First hour: 220°C / 430°FSecond hour: 210°C / 410°FThird hour: 200°C / 390°F After three hours, carefully remove the aluminum rod. Pour two glasses of water over the top of the porchetta, then return it to the oven for another 30 minutes at 250°C / 480°F to make the skin bubble and crisp.
If the crust hasn’t blistered after 30 minutes, pour another glass of water over the top and roast a little longer until the skin is beautifully golden and crunchy.