We often ask "Are you veg?", "Are you non-veg?" to ask if someone is a vegetarian or a non-vegetarian.
Is there a hypernym for both of them? So you could ask "What is your […]?" or maybe "Are you a […]?" In the same way we might ask for someone's gender.
Best Answer
I'm not sure why the confusion with the terms veg and non-veg. I live in the northeast US and I hear these terms as well as veggie with some frequency, although it might be because I hang with a vegan/vegetarian/omnivorous crowd where we ask about these things.
I don't have a hypernym specifically for meat-eating, but when I am hosting guests, I ask them if they have dietary restrictions or preferences or, in the case of my kosher/halal friends, strictures. These terms cover the gambit of differences in eating habits, so they would cover your terms as well.