What I wish my parents' generation understood about "picky eaters" (autistic in my case) especially younger ones, is that we may ask for a peanut butter sandwich, thinking it's "safe," but if you have the wrong kind of PB, wrong kind of bread, wrong kind of jelly, or only jelly instead of honey, don't butter the bread before the PB... it's no longer the food we expected or agreed to eat. It's wrong.