How to Make Crispy Pork Belly like in Expensive Restaurant

Pork belly
Red onion
Garlic
Green onions
Black peppercorns
Bay leaf
Salt
Black pepper
Paprika
Dried rosemary
Brussels sprouts
Pumpkin or sweet potato
Olive oil
Carrot
Apple cider vinegar
Honey
Brown sugar
Soy sauce
Dijon mustard
Ground garlic
Butter
Sunflower seeds
Lemon juice