Thinly slice 1/3 onion and rinse in cold water.

Heat a pan and add cooking oil.

Add tteokbokki rice cakes, soy sauce, and sugar to the pan and stir-fry.

If the mixture becomes too dry, add 3 tbsp of water.

When the rice cakes are soft, add the sliced onion.

Stir-fry for about 5 minutes or until the onion is tender.

Add sesame seeds and black sesame seeds.

Add 1 tbsp of sesame oil and mix well.