Wish I could post a pic but I tossed them all when I found the mold The mold was growing just on the top of the cupcakes, below the icing, but not on the icing. It must be the water in the icing because I've never had mold occur with my tried and true bathbomb recipe. I used two icing recipes that I found specifically for cupcake bombs and neither one called for a preservative. The first was just the regular old royal icing recipe...powdered sugar, meringue powder, and yeppers...water. The other was the WSP recipe for cupcake icing with melt and pour, foaming bath whip and glycerine...probably glycerine overload there. I was wondering if anyone else who makes iced cupcake bombs has ever found mold?