Shred the cabbage and prepare it.
Beat the eggs and mix with flour and water to make the batter.
Add the shredded cabbage and squid (or seafood mix for okonomiyaki) to the batter.
Heat oil in a pan and spread the batter evenly.
Cook on medium-low heat until golden brown on both sides.
Top with okonomiyaki sauce, mayonnaise, bonito flakes, and chopped green onions to finish.