Can you freeze a cake iced with pure icing sugar?

Yes, you can freeze a cake iced with pure icing sugar, but the texture of the icing may be affected upon thawing. The icing could become slightly grainy or weep moisture as it defrosts. To minimize this, ensure the cake is well-wrapped in plastic wrap and then aluminum foil to protect it from freezer burn. It's best to freeze the cake without the icing and add it after thawing for optimal results.