If you've ever had the pleasure of being behind the scenes at The Pabst and Riverside Theaters and Turner Hall Ballroom, you know they do right by visiting performers. The venues have what might be described as a secret weapon. That's pastry chef Julie Thorsen, whose creations - like her Muppets cake pops for Sufjan Stevens - are so welcomed that she's getting more and more onstage props. So don't expect her to be a secret for long.