Same can be said for Ice Bear to be fair. Between cooking for people in other dimensions or planets (that box the young bears fly in might as well be a TARDIS since it travels through space and time and other dimensions) and knows a variety of cooking styles as he grew older (I mean, dude didn't get a job as a hibachi chef for nothing, he was even promoted to run one of their franchise joints, he even can cook no nut and vegetarian and fruit dishes for his brother Panda. So, he does keep people's allergies and food preferences in mind if they're vegetarian, vegan or not. Hell, with that in mind, it shouldn't be hard for Ice Bear to think of dishes to account for if an alien has a food preference or avoid an allergy.