Cut the chicken into bite-sized pieces.
Cut potatoes, carrots, and onions into pieces suitable for eating.
Heat cooking oil in a pan and stir-fry the chicken.
Add potatoes, carrots, and onions, and stir-fry together.
Season with gochujang (Korean chili paste), soy sauce, sugar, minced garlic, and red pepper powder.
Add 200ml of water and simmer over medium heat.
Boil until the ingredients are cooked through, and add green onions at the end.