Koro-Sensei-Inspired Takoyaki (Japanese Octopus Balls)
An unofficial Assassination Classroom-inspired takoyaki recipe with savory octopus and classic Japanese toppings.
A Little Street-Food Fun
Inspired by the playful energy of Assassination Classroom, these golden takoyaki bring an Osaka-style street-food favorite to the home kitchen. Small pieces of octopus, scallions, and pickled ginger sit inside soft savory batter, finished with Japanese sauce, mayonnaise, and flavorful toppings. This is an independent fan-inspired recipe, not a claim that this exact version appeared in a verified scene.
Golden outside and tender inside, takoyaki are bite-size Japanese snacks filled with pieces of octopus, scallions, and pickled ginger. This Assassination Classroom-inspired version finishes the warm balls with takoyaki sauce, Japanese mayonnaise, aonori, and delicate bonito flakes.
They’re made in a special takoyaki pan with round wells. The first few turns take some practice, but working one batch at a time makes the process easier to manage.
Table of Contents
What Is Takoyaki?
Takoyaki is a popular Japanese street food associated with Osaka. A thin, savory batter cooks in a pan of rounded molds around small pieces of octopus and other seasonings. As the outside sets, you turn the partially cooked pieces into spheres. The finished takoyaki have a lightly browned exterior and a soft, fully cooked center.
For this version, use precooked octopus, available chilled or frozen at some seafood counters and Japanese grocery stores. Fresh scallions and chopped pickled ginger brighten the savory batter. A drizzle of sauce and mayonnaise gives each serving the familiar festival-food finish.
Tips for Making Takoyaki at Home
Prepare Everything Before Heating the Pan
Cut the cooked octopus into small, even pieces. Slice the scallions and chop the pickled ginger. Measure the toppings before cooking, since the takoyaki need your attention once the batter begins to set.
Keep the Batter Thin
A good takoyaki batter is much looser than pancake batter. Whisk the flour, cornstarch, and baking powder with eggs, cooled dashi, and soy sauce. Stir again before pouring because starch can settle at the bottom of the bowl.
Oil Every Well
Brush the wells and the surface around them with neutral oil. Pour batter almost to the rim, then add one piece of octopus and a little scallion and ginger to each well. A small amount of batter spilling onto the surrounding surface is normal when shaping takoyaki.
Turn in Stages
When the rims begin to set, use wooden picks or takoyaki turning tools to loosen the edges and rotate each piece partway. Tuck loose batter underneath, then turn again as it firms up. Rotate until evenly browned and rounded. Cook until the egg-containing batter is set all the way through, not liquid or raw in the center.
Expect More Than One Batch
A 12-well pan will need roughly two batches for 24 balls. Keep finished takoyaki warm while the next batch cooks, but add the sauces and toppings just before serving so the outside stays appealing.
Serving and Storage
Place about six takoyaki on each plate. Drizzle with takoyaki sauce and Japanese mayonnaise, then sprinkle with aonori and bonito flakes. Let them cool briefly before eating—the filling can be extremely hot.
Refrigerate leftovers promptly in a covered container. Reheat until hot throughout; if using a food thermometer, leftovers should reach 165°F (74°C). Add fresh garnishes after reheating.
Hidden Flavours Village is an independent fan-inspired food website and is not affiliated with or endorsed by the creators or rights holders of Assassination Classroom.
Koro-Sensei-Inspired Takoyaki (Japanese Octopus Balls)
Ingredients
Method
- Prepare the fillings. Cut the precooked octopus into 24 small pieces. Finely slice the scallions, and chop and drain the pickled ginger. Measure the sauce, mayonnaise, aonori, and bonito flakes so they are ready for serving. Use precooked octopus, not raw octopus, for these short-cooking takoyaki.
- Whisk the batter. In a large bowl whisk together the flour, cornstarch, and baking powder. In a separate container whisk the eggs, cooled dashi, and soy sauce. Gradually pour the wet mixture into the dry ingredients, whisking until pourable and mostly smooth. The batter should be noticeably thinner than pancake batter; stir before every batch because the starch settles.
- Preheat and oil the pan. Heat a takoyaki pan over medium heat according to its instructions. Brush each well and the surrounding flat surface generously with neutral oil. Set the pan on a stable, heat-safe surface. The oil helps prevent sticking and promotes a golden outside.
- Fill the wells. Pour batter nearly to the top of each well. Add one piece of octopus, a pinch of scallions, a little pickled ginger, and, if using, a few tenkasu bits to each. Top up with a little batter if needed. Keep the add-ins small enough to fit inside a rounded ball.
- Turn and cook the takoyaki. As the edges begin to firm, use takoyaki picks or wooden skewers to loosen the batter around each well. Rotate each piece about a quarter-turn, tucking the soft edges underneath. Continue turning and rounding the balls until the surfaces are golden and the egg-containing centers are cooked through, not liquid. Allow roughly 6–8 minutes per batch, adjusting for the size of the wells and the heat of the pan. Repeat with the remaining batter and filling. A 12-well pan usually needs two batches; timing varies. For egg dishes, a safe benchmark is 160°F (71°C) at the center if a thin food thermometer can be used.
- Sauce and serve. Transfer the cooked takoyaki to plates, about six balls per person. Drizzle with takoyaki sauce and Japanese mayonnaise. Sprinkle with aonori and bonito flakes. Allow the centers to cool briefly before eating. Sauce just before eating; the centers retain heat and can burn the mouth.
Notes
- Makes approximately 24 takoyaki, or four snack servings of six. The exact number depends on the size of your takoyaki pan.
- Plan for about 20 minutes of preparation and 25 minutes of cooking, including preheating and multiple batches; the full recipe takes about 45 minutes.
- A takoyaki pan is required to make the traditional round shape. Keep the batter thin and stir it before each batch.
- Use cooked octopus and refrigerated, prepared Japanese mayonnaise. Cook the egg-based batter fully; it should be soft but not raw or runny in the center.
- Contains wheat, egg, soy, and molluscan seafood (octopus); dashi and bonito may contain fish. Check commercial sauces, mayonnaise, and tenkasu for additional allergens.
- Refrigerate perishable leftovers within 2 hours; reheat leftovers to 165°F (74°C) and add fresh toppings after reheating.
