Cut the chicken into bite-sized pieces.
Dice the potatoes, carrots, and onions.
Add cooking oil to a pan and stir-fry the chicken.
Add the vegetables and stir-fry together.
Add soy sauce, sugar, minced garlic, ginger, pepper, and water, then bring to a boil.
Simmer on low heat until cooked.
Boil until the sauce is reduced and finish.