Cut the cabbage and green onions and set aside.
In a bowl, mix flour, water, and eggs.
Add the vegetables and pork to the batter and mix together.
Heat oil in a pan and shape the batter into a round pancake.
Cook on medium heat until both sides are golden brown.
Top the finished okonomiyaki with okonomiyaki sauce, mayonnaise, bonito flakes, and seaweed powder.