Clean the chicken and cut it into bite-sized pieces.
Cut the potato, carrot, and onion into bite-sized chunks.
Heat cooking oil in a pot and stir-fry the chicken.
When the chicken is half cooked, add the prepared vegetables and stir-fry.
Add gochujang (Korean chili paste), soy sauce, minced garlic, sugar, and red pepper flakes, then mix well.
Pour 200ml of water and bring to a boil.
Simmer over medium heat until the potatoes and carrots are cooked.
Taste and season with salt and pepper.
Add Cheongyang chili peppers and green onions, simmer for 2 more minutes, then finish.