Characters that may be a reference to other media?
I have a theory that a bunch of the characters' designs are references to various well-known anime characters, regardless of whether or not they actually fit the food they're named after.
For example, I believe Brownie is based on Sebastian Michelis from "Black Butler", which is a popular Gothic Victorian anime about a cold, confident British butler who won't hesitate to resort to violence to protect his charge-- he likes cats, and the boy he's protecting infamously wore a dress in one episode while incognito, which might be why Brownie wears a maid outfit with cat ears in his Deadly Agent skin.
Milk and Jiuniang might be based on Tohru and Kanna from "Miss Kobayashi's Dragon Maid"-- Tohru is also a busty maid with horns, and Kanna also has similar bangs/hair color and a pink dress.
Crab Long Bao might be based on Uzumaki Naruto, though there are plenty of other energetic shonen manga protagonists with blonde hair.
Sashimi could be based on Narancia from "JoJo's Bizarre Adventure: Vento Aureo" (a young, energetic boy with a gender-neutral haircut tied in an orange headband).
Moon Cake's hairstyle reminds me a bit of Belldandy from "Ah! My Goddess".
I don't think Foie Gras is based on an anime character, but rather on ballet/plays like The Snow Queen and The Swan Princess.
I don't know if any of these are confirmed, or just a result of me watching too much anime.