Finely chop the cabbage and green onion.
Mix flour, eggs, and water to make a batter.
Add the chopped vegetables, pork, and shrimp to the batter and mix well.
Heat oil in a pan and spread the batter in a round shape.
Cook on medium-low heat until golden brown on both sides.
Drizzle okonomiyaki sauce and mayonnaise over the cooked okonomiyaki.
Top with bonito flakes and seaweed powder to finish.