Cut the fish cake into bite-sized pieces.
Julienne the onion and carrot.
Heat cooking oil in a pan and stir-fry the onion and carrot first.
Add the fish cake and stir-fry together.
Add soy sauce, sugar, gochujang, and water, then mix well.
Add minced garlic and simmer over medium heat.
Finish with sesame seeds and chopped green onion.