In a bowl, combine the soy sauce, mustard, honey, sea salt, freshly ground pepper, paprika, and garlic granules. Mix well to create a smooth glaze.
With a very sharp knife, cut the skin from the belly in rhombuses onto the meat.
Coat the belly well with the glaze, massaging it with my hands so that it penetrates through the notches on the skin.
Pour the olive oil into the ceramic baking dish and spread a sliced onion and scattered garlic cloves on the bottom of the baking tray.
Place the piece of glazed pork belly over the onion and pour the beer around it.
Cover the dish with aluminium foil and place it in the oven preheated to 180 degrees Celsius (356 F) for one hour.
After an hour, turn the pork belly over and bake for another half hour.
Turn the meat skin side up and bake uncovered for another ten minutes at the same temperature.
Remove the pork belly to a plate or tray and let it rest.
Video
Notes
If you want to serve the pork belly as an appetizer, place a cutting board on top with a weight and let it cool like that. This will help it to have an even, flat shape and allow excess fat to drain.If you serve like an appetizer cut the pork belly into small squares or strips for easy snacking. Serve on mini buns with a touch of mustard or pickled vegetables.You can also serve the pork belly with your favourite side dishes like roasted vegetables, mashed potatoes, or a simple salad.