Prepare Onao Mild powder.
Cut chicken, potatoes, onion, and other ingredients into bite-size pieces.
Heat cooking oil in a pan and stir-fry the chicken.
Add potatoes and onions, and stir-fry together.
Pour in water and bring to a boil.
Add Onao Mild powder and stir well while simmering.
When all ingredients are cooked and the sauce thickens, turn off the heat.
Transfer to a bowl and serve.