Make garlic-herb paste:
Make the garlic-herb paste: In a mortar and pestle, put the diced garlic, rosemary, and thyme. Grind them. Then add 2 tbsp extra virgin olive oil, 1/4 tsp salt, 1/4 tsp pepper, and ground coriander (if using). Keep grinding until everything is thoroughly mixed.Score and season pork:
Get the meat ready: With a very sharp knife, cut a diamond pattern into the pork belly skin, going all the way through the skin and fat. Season the entire piece with the leftover 1/4 tsp salt and 1/4 tsp pepper.Sear pork belly:
Sear the pork: Place a large skillet or non-stick pan over high heat and add a generous drizzle of extra virgin olive oil. Brown the pork on every side, achieving a golden color on the skin side and a deep brown on the others. Make sure all sides, including the thinner edges and ends, are well seared.Apply paste and slow-cook:
Apply herbs and slow-cook: Move the pork belly into the slow cooker. Coat the pork all over with the garlic-herb paste, pressing it into the cuts on the skin side. Place the pork with the skin facing up. Pour in the beef stock (or vegetable/chicken stock) and add a few extra herb sprigs into the slow cooker. Cook on low for 6 hours or high for 4 hours.Slice cooked pork:
Cut: After cooking, cut the pork belly into slices 1.5-2 cm thick. They will be extremely tender. Note: I typically remove the skin, but you can make it crispy under the oven broiler if you like.