I freeze my icing also, but usually in recylced clear gelato containers from the grocery store after eating the gelato. My curiosity now is this. I use saran wrap squares and place my icing on it and fold diagonal then pick up and twist the ends. This way I can drop the icing into a bag and when I am done pull it out and have way less clean up of my bags and just throw the saran wrap away if the bag was empty. What I am wondering now is, can I just freeze my saran wrap bags in a plastic container with a lid on. Going to test this next time I freeze icing and see what happens, that way my couplers get freed up and cleaned for the next go round.