NPR has an interesting interview with author, Mathew Amster-Burton and his little monkey, Iris about his book Hungry Monkey. This book came out of Mathew's search for a good "what to feed kids" book. He found many books fell short as to what children really can eat, and actually scared readers about kids diets, eating habits and allergies.
While I'm not sure I'm on the same page with him when it comes to sugar consumption, for the most part I think he's on the right track when it comes to getting kids to develop more sophisticated palate.
You can listen to Scott Simon's interview here: NPR Hungry Monkey
