Well, I was wondering if different types of vinegar could have gluten in it.
Rice vinegar has 0% and that is what must be used for sushi rice.
No it doesn't. In most restaurants, yeah, but it's not a requirement that rice vinegar is what is used for sushi rice.
I worked in sushi fast food, they used vinegar from inverted corn syrup...It just has to be a type of white or light-colored vinegar.
I know a family that uses apple cider vinegar.
My family just uses the cheapest white vinegar.
As long as it isn't balsamic, asian black, or darker rice vinegars, it's whatevs.