Cut the rice cakes and fish cakes into bite-sized pieces.
Add cooking oil to a pan and sauté minced garlic.
Add the rice cakes and fish cakes to the pan and stir-fry.
Stir in gochujang (Korean chili paste), chili powder, soy sauce, and sugar.
Add onion and green onion, and stir-fry together.
Add a little water and simmer until the sauce is absorbed.
Finish with sesame oil and sesame seeds.