Brides and grooms, here's how to freeze the top of your wedding cake the right way! This comes from April Reed owner of April Reed Cake Designs in New York:
First, take off any decorations like fresh fruit, flowers, even sugar decorations don't hold up well during freezing. Then wait to wrap the cake. Freeze the cake for 2 hours before wrapping. That way the frosting will harden. Then, cover the cake in plastic wrap not aluminum foil. Foil is not an airtight material, so it won't protect against freezer burn. The best thing to do is wrap the cake in plastic wrap and then place the wrapped cake in an airtight Tupperware-type container. Also, tie a ribbon from the wedding bouquet around the container. That way every time you open the freezer and see it, it'll be a reminder of your big day. Then, the day before your anniversary, put the cake in the refrigerator to defrost. Then remove the wrapping 2 hours before you plan to eat it. So how long will that wedding cake last in the freezer? Well, even though frozen foods are safe forever, they won't taste quite the same. For example, that 18-year-old slice of wedding cake may look the same as when you cut it, but the taste? Not so much. The enzymes present in foods with animal products make their quality deteriorate. So eat your wedding cake on your first anniversary if you want it to still taste like wedding cake.