I have the pickiest eater in the world in my daycare and unfortunately he has some influence over the others. I cook what I want (healthy, unprocessed) and ignore his "yucky" etc. I tell him he can eat it or wait until snack. Slowly over the 4 months he has been trying different things because he has learned he will be hungry. Last week he "licked" some tuna casserole (this is big for him) and today he ate some chicken but ignored the quinoa. He now eats yogurt with me and cheese and pasta. One step at a time.