Finely chop the cabbage and green onion.
Mix flour, eggs, and water to make the batter.
Add the vegetables and bacon (or pork) to the batter.
Heat oil in a pan and pour in the batter.
Cook on medium-low heat until both sides are golden brown.
Drizzle okonomiyaki sauce and mayonnaise over the top.
Finish by adding bonito flakes and seaweed powder.