Sumo's recipes are either handed down from SumoGrandma(rest in peace, Obaa-san) or pulled from random cookbooks. I'll try to give credit where I can, but I may not be able to remember the exact book I stole the recipe from.
Try them out, post some of your own, or just post pics of your favorite food.
I mainly cook Asian food, but I have been know to whip up some non-Asian cuisine if the mood strikes me. It's all good.