In every shop mayonnaise is served, but in the shops where the staff cooks and serves okonomiyaki, without spreading mayonnaise on the dough with the spatula after saucing, they put the sauce, aonori-ko, sliced dried bonito on the dough and after that, mayonnaise is put over all the dough or in the center, or in the shops where the customers grills by themselves at the table, in order for them to be able to put mayonnaise on by preference, a little sachet of it is often served additionally.
マヨネーズは大抵どの店でも付いているが、厨房で作って出す店の場合は関西のようにソースを塗ったあとで生地の上にヘラで塗り広げたりせずにソース→青海苔→鰹節と仕上げてから全体や中央にかけられるか、客が自分のテーブル席で焼く店なら好みでかけられるように小さなパック入りの使いきりタイプのマヨネーズが別に付いてくる場合が多い。