01 - Whisk together flour, eggs, dashi stock, soy sauce, and salt in a mixing bowl until smooth and thin. Set aside.
02 - Preheat a takoyaki pan over medium heat and lightly oil each well to prevent sticking.
03 - Pour batter into each well, filling completely to the top.
04 - Place a piece of octopus, some tenkasu, pickled ginger, and green onion into each well.
05 - Let cook for 1 to 2 minutes until edges begin to set and form a light crust.
06 - Use skewers or chopsticks to turn each ball 90 degrees, allowing uncooked batter to flow out and start forming a round shape.
07 - Keep turning every 1 to 2 minutes until balls are golden and evenly crisp on all sides, approximately 8 to 10 minutes total cooking time.
08 - Remove from pan and serve hot. Drizzle with takoyaki sauce and mayonnaise, then sprinkle with aonori and katsuobushi.