Finely chop the cabbage and green onion.
Cut the pork into bite-sized pieces.
In a bowl, mix flour, eggs, and water until well combined.
Add the chopped vegetables and pork to the batter and mix.
Heat cooking oil in a pan and spread the batter out wide.
Cook both sides over medium-low heat until golden brown.
Brush okonomiyaki sauce on top and drizzle with mayonnaise.
Sprinkle with katsuobushi (bonito flakes) and seaweed powder to finish.