Source: https://m.blog.naver.com/junggourmet/223310978871 (modified version)
Cut potatoes and chicken into bite-sized pieces.
Prepare the vegetables such as onion, carrot, and green onion.
Heat cooking oil in a pot and stir-fry the chicken.
When the chicken is cooked through, add potatoes and vegetables and stir-fry together.
Add gochujang (Korean chili paste), soy sauce, sugar, garlic, pepper, and other seasonings, then stir-fry.
Pour in water and simmer over medium heat until the potatoes are cooked through.
When the broth thickens and all the ingredients are cooked, add green onion to finish.