Cut cabbage and fish cakes into bite-sized pieces.
Slice the onion thinly.
Heat olive oil in a pan and stir-fry the onion.
Add cabbage and fish cakes, then sauté together.
Add gochujang (Korean chili paste), soy sauce, minced garlic, chili powder, and water, then mix well so the seasoning is absorbed.
Stir-fry, add green onions at the end, sauté once more, and it's finished.