Send ☂ for a FOOD headcanon.
Valerie loves meat. Many people don’t suspect it due to her overall petite body frame, but she likes to dine on a good piece of hearty meat almost all the time, or at least have dishes that have a bountiful amount of meat included in it (like most stews and pizza). Jerky and the like are favorite snacks of hers, and she even eats raw meat at times, if she doesn’t feel like cooking it (which is rare, but still happens).
Another thing she likes are fried foods, especially the battered sorts. The fatty flavors are a guilty pleasure, though she does enjoy the “full” feeling they give her stomach.
No one knows it, but Valerie every so often eats pokemon food (think the "kibble" type of food you see pokemon in the anime eat), typically as a “comfort food” kind of deal. This behavior originates from...very sad circumstances in her childhood, that she’ll be extremely hesitant to explain if someone discovers she snacking on the “forbidden” meal. She hopes no one will find out this secret of hers, as she thinks it’s utterly embarrassing.
Valerie learned how to cook from Siebold, and she learned how to cook well. After the elite heard Valerie reveal she didn’t know how to work a kitchen or make any kind of dishes at all one day, he set aside some free time to spend teaching her. Around half a year passed before Valerie cooked the first meal she was proud of (and Siebold was proud of her too).