Place the garlic and a pinch of salt in a mortar and pastle. Crush it until the garlic turns into garlic paste, and then Add 3/4 tsp of white pepper. Mix them well. (You can use garlic chrusher instead of mortar and pestle)

Place the chicken in a bowl, and season it with a little bit of salt

Heat some oil in a pan

If the oil is already hot enough, fry the chicken until the skin turn into golden brown (round about 2 minutes each side), and set the chicken aside

Take out the rest of the oil from the pan, but leave a little bit of it in the pan

To the same pan, add the mixture of garlic and white pepper, saute it until fragrant, Add the onion and stir it for 1 minute, and then add the water. Bring it to a boil

Stir in soy sauce, sweet soy sauce, and oyster sauce. Stir it evenly

Add the chicken and tomato in to the pan, cover the pan, cook the chicken until well done, and the sauce is thickened. Stir it occasionally! (Don't forget to taste it, if you need more salt, just add it)

If the sauce is already thickened, set the chicken aside, sprinkle some slices green onion on the top as garnish

Chicken drum in soy sauce and oyster sauce is ready to be served

Check the video how did I make this recipe on my YouTube channel : https://youtu.be/6eMURVUgGUE