Cut the chicken into bite-sized pieces.
Prepare the potatoes, carrots, and onions.
Heat oil in a pan and stir-fry the chicken.
Add the vegetables and stir-fry together.
Add gochujang (Korean chili paste), soy sauce, sugar, and minced garlic; mix well.
Pour in water and bring to a boil.
Simmer until all ingredients are cooked through.