Cut the whole pork belly in half and put it in a pot and pour water to soak the pork belly. Add bay leaves, cloves, whole pepper, garlic, mirin, onion, etc. and boil over medium heat. When it boils, boil it over medium low heat for about 30 minutes. When the meat is cooked, take out all the fragrant ingredients and strain them through a sieve to cool the broth. When the broth cools down, remove the hardened oil and strain the broth again.

Boil the eggs and cut the boiled pork belly into cubes. Put boiled eggs, pork belly, and half an onion into the cooled broth and heat it up.

Add 1/2 low-salt soy sauce, mirin, and sugar and boil. When it starts to boil, reduce the heat to medium and simmer for 15 to 20 minutes.