In a large bowl, combine together chicken, vinegar, soy sauce, sugar, pepper, bay leaf and garlic.
Heat oil in a frying pan over medium high heat.
In a large skillet, combine browned chicken, reserved marinade and water.
Stir in pineapple cuts and potatoes and cook for couple more minutes.
Serve with steamed rice.

That's it my friend. Hope you like it so much. Good luck