Preheat your oven to 375°F.
Score the pork belly lightly and season with salt and pepper. Heat a skillet over medium-high heat to sear the pork belly on all sides until golden brown.
Transfer the seared pork belly to a deep oven-safe pot. Add a splash of water or broth, cover, and slow braise in the oven for about 1.5 to 2 hours until tender.
Meanwhile, chop carrots and parsnips into even pieces, toss with a drizzle of olive oil, salt, and pepper, and spread on a baking sheet. Roast in the oven for about 25-30 minutes until tender and caramelized.
In a small saucepan, gently poach the egg white by simmering it in water for about 2-3 minutes until set. Alternatively, lightly whisk and cook in a non-stick pan.
Warm the white beans in a small pot over low heat, seasoning with a pinch of salt and pepper.
To plate, slice the tender pork belly and arrange alongside a portion of roasted root vegetables and warmed white beans. Top the pork belly with the poached egg white for an added delicate texture.
Serve immediately and enjoy the blend of savory, sweet, and hearty flavors.