kse was confirmed to have been living alone in his world, so i'm inclined to believe he knows how to cook. bsh must've known sth about cooking too. i won't elaborate how i know, i just do.
do you think they must've cooked tgt sometimes? they split tasks among themselves and went about it in complete silence. kse was quiet bc he was listening to braun's yapping, bsh was quiet bc he was too concentrated on making sure kse wasn't trying to pull off a murder-suicide by pouring poison into their broth pot.
they occasionally argued about the recipes. surprisingly enough, this was a topic in which victories were evenly divided between the two of them. this impromptu activity somehow expanded into them shopping for groceries together.
(the cashier at the mart totally thought they were married. they never brought it up, just giggled behind their hands whenever these two guys bickered at the frozen treats aisle. once, the brown-haired guy drew a lot and won them ice-creams. it was the first time they weren't each other's throat for the whole trip.)