Combine chicken, soy sauce, vinegar, and half of the crushed garlic in a bowl. Mix until all ingredients are well blended. Let it stay for at least 1 hour.

Fry the remaining garlic until golden brown. Set aside.

Combine the butter and garlic-infused oil (this is the oil used to cook the garlic). Sauté the onion and then add the marinated chicken. Cook until the chicken turns light brown.

Add the oyster sauce and then pour the remaining marinade and water. Let it boil.

Add Knorr chicken cube, sugar, bay leaves, fried garlic, and whole peppercorn. Reduce to a simmer. Cover the pot and cook for 35 to 45 minutes.

Transfer to a serving bowl. Garnish with chopped green onions.

Serve. Share and enjoy!