Colored sprinkles on powdered sugar icing run no matter how I store them or how long I leave out before storying.
I usually sprinkle with colored nonpariels or colored sugar and then I let sit for sometimes six hours before storing. No matter what I store them in (cookie tin, cover with foil, plastic container, etc. the next day the colors from the sprinkles run and the icing begins to get wet. Any suggestions?