Nothing. I've seen too many bad food habits that form from over compensating at dinner time. Especially with extra options when they don't like something. Like others I make sure there is something on the plate they will eat but that's as far as I go. And it's worked. My kids will eat anything. Just don't scold them because they don't like it. Their palates will take a while to develop which is why it's always important to keep trying things even if they hated it yesterday. Try and limit the drama at the table. Otherwise it will just keep happening.