Oooh, how lovely. With much of the modern pig raising methods, it’s a bit hard to find suitably fatty belly.
A number of ideas from my favourite food writer here. The roast works well but if it is really very, very fatty, then the rillettes might be the way to go - https://www.theguardian.com/lifeandstyle/2009/oct/11/nigel-slater-recipes-pork-belly
As naf suggests, there are a goodly number of Chinese recipes around for fatty belly. You’ll find lots of recipes for “Chairman Mao’s red braised pork belly”. It’s a delicious Hunanese (?) dish
