As a child Stephanie Lucianovic lived for years on grilled cheese and created an elaborate system for disposing of revolting food involving bookshelves, holiday centerpieces, and, later, boyfriends. She agonized not over meeting her future in-laws, but over the peaches they served her. As an adult, this picky eater found herself in the most unlikely of circumstances: a graduate of culinary school who became a cheesemonger and then a food writer. Along the way, she realized just how common her plight was. It wasn t surprising to discover that picky eating is an issue for millions of kids, but...