In a small bowl, combine soy sauce, sesame oil, and minced garlic. If using honey, sriracha, or rice vinegar, add them now and whisk until well combined.
2 tablespoons low-sodium soy sauce, 1 tablespoon sesame oil, 1 teaspoon minced garlic, 1 teaspoon honey, 1 teaspoon sriracha or gochujang, 1 teaspoon rice vinegar
If your sesame seeds aren't already toasted, place them in a dry saucepan over medium heat for about 2 minutes, until lightly golden and fragrant. Watch carefully so they don't burn. Set aside to cool slightly.
2 tablespoons toasted sesame seeds
Thinly slice the scallion, separating the white and green parts. The white parts will be mixed into the sauce while the green parts will be used as a garnish.
1 scallion
Arrange the round rice cakes on a serving platter. Using a spoon, spread a thin layer of the sauce mixture over each rice cake. Make sure to coat evenly but not so much that they become soggy.
8 plain round rice cakes
Sprinkle the toasted sesame seeds evenly over the sauce on each rice cake. Then add the sliced white parts of the scallion.
2 tablespoons toasted sesame seeds, 1 scallion
Garnish each rice cake with the green parts of the scallions for a fresh, colorful finish.
1 scallion
Serve immediately to maintain the crunchy texture of the rice cakes.