Clean the chicken thoroughly.
Cut the onion, carrot, potato, and green onion into bite-sized pieces.
Blanch the chicken in boiling water to remove impurities.
Add oil to a pot and sauté garlic to bring out the aroma.
Add the chicken and vegetables to the pot and stir-fry.
Add water, soy sauce, gochujang, and sugar, then bring to a boil.
Add tteokbokki rice cakes, milk, and heavy cream to make the rosé sauce.
Simmer over medium-low heat until all ingredients are cooked.
Top with mozzarella cheese, cover, and cook until the cheese melts.
Transfer to a plate, sprinkle with parsley flakes, and serve.