Prepare the batter – Whisk flour, eggs, dashi, soy sauce, and salt until smooth.
Heat the takoyaki pan – Grease each mold with oil and heat over medium flame.
Pour batter – Fill molds almost to the top.
Add fillings – Add a piece of octopus, green onions, and pickled ginger in each mold.
Cook and rotate – After 1–2 minutes, use skewers to turn each ball halfway. Continue rotating until golden and round.
Cook thoroughly – Ensure the outside is crispy and inside is cooked.
Add toppings – Drizzle with takoyaki sauce, mayonnaise, and sprinkle bonito flakes and seaweed flakes.
Serve hot – Best enjoyed immediately.