Make tteokbokki sauce: Mix the gochujang, Korean red pepper flakes, sugar, soy sauce, and garlic in a small bowl. Set it aside.
3 Tablespoons gochujang, 1 Tablespoon Korean red pepper flakes, 1 ½ Tablespoons sugar, 1 ½ Tablespoons soy sauce, 2 cloves garlic
Add rice cakes and fish cakes: Add the water or anchovy stock to a large pan and bring to a boil. Add the tteokbokki sauce, rice cakes, fish cakes, and optional vegetables. See Note 1 for how to make anchovy stock.
1 lb rice cakes, 3 cups water or anchovy stock, 1 cup fish cakes
Cook: Cook over medium heat until the rice cakes are soft and the sauce thickens to your liking. About 5 to 7 minutes. Add more stock/water if desired.
Season and serve: Taste and adjust to your liking. Add more sugar or soy sauce if desired. Top with sesame oil, scallions, and sesame seeds. If using, add the pre-cooked noodles, boiled eggs, or top with shredded cheese at this time. Enjoy! 2 teaspoon toasted sesame oil, 1 Tablespoon sesame seeds, 2 stalks scallions