im making a thomas the train cake this weekend the cake is in the freezer now i will be taking it out on sat. to carve it,being it has to be frozen when i carve it, can i ice ane crumb coat the cake while its frozen, after i crumb coat the cake i`ll have to decorate it with the different color buttercream, dose the cake have to be at room temp before i decorate it. thank you
I find that it's a little easier to carve a partially frozen cake. However I never crumbcoat or ice a frozen, partially frozen or even COLD cake. It's best to crumbcoat, ice and decorate a cake that is room temperature. I know that some say they don't have any issues with icing a frozen cake but I do. I use a crusting buttercream and I have a hard time getting it to crust if I ice a frozen or partially frozen cake.
You can also have issues like condensation causing colors to run etc. if you ice a cake while it's frozen. I don't know what your climate is like or if humidity is an issue for you, but rather than risk having issues with your cake it would be best not to take the risk and to ice and decorate it at room temperature.
I love the look of excitement on his face! Great job on the cake.