John Unrein is the Editor of Bake Magazine. He has been at Sosland Publishing since 2001, covering the retail baking industry. Mr. Unrein is a 1984 graduate of the University of Kansas.
Typical challenges are poor releasing (especially for products high in sugar), off flavor or risk of allergy, misting, lack of spray ability, disappearance or puddling of the oil when the trays are not used directly, build up on the trays after baking, price, and other factors.