This was so helpful! I have a related question. I used pasteurized egg whites in my royal icing. The icing was in the frig about 5 days before I iced this last batch of cookies. I iced the cookies 1-2 days ago. How long can my iced cookies safely sit in a container (zip lock bag or tupperware)? I was going to hand these out to friends today, but started worrying! Thank you!