Shred the cabbage.
Peel and clean the shrimp thoroughly.
In a bowl, combine flour, eggs, and water to make a batter.
Add the shredded cabbage and shrimp to the batter and mix well.
Heat oil in a pan and pour the batter, cooking both sides until golden brown.
Drizzle okonomiyaki sauce and mayonnaise on top.
Garnish with bonito flakes and seaweed flakes.