Adobo Ni Mareng Behnay

Ingredients
1 1/2 lbs. lechon belly
5 tablespoons soy sauce
3 cups beef broth
1/4 cup white vinegar
5 to 6 pieces dried bay leaves
1 medium onion chopped
4 to 5 cloves garlic crushed
1 tablespoon whole peppercorn
1 teaspoon granulated white sugar
3 tablespoons cooking oil