I have a reduced appetite as an adult because of medical conditions, so it’s difficult to tell because I have a hard time eating anyway. I don’t have any food aversions and if I’m hungry will eat most anything. But like the other reply to my comment said, it resulted in a lot of unpleasant dinners. I was on a behavioral diet most of my childhood as well so that had a factor in it all too. I think having a standard, boring “second choice” might be a good idea, but also definitely just communicate about what they like and don’t like, children are capable of reason just not always encouraged into the ability.