@al_pacino while this stated that it wasn't doujin, it was still created by fan artists and not the original author, thus, for the sake of jokes, canon and lore will be broken.
Lorewise, Kiyohime can cook, as far as fried food is concerned.
"While Kiyohime's cooking is quite stirring, nearly anything would turn delicious if fire and oil were to be employed. That's not all home cooking is about. A tenzo's teachings will have to be drilled into her in the temple one more time." - Benienma