Up until now I've only used a shortening only recipe. Would using her recipe of half shortening and half butter require keeping the cake in the fridge after it's decorated? I know in her tutorial she said she let it in the fridge to set up a little, but once it's decorated do I need to keep it in the fridge because of the butter? Right now it's winter in my area so we keep my house at around 72-73. The last time I made a butter based frosting in the spring, it melted down the sides of my cake and ruined the cake. I want to do this technique for 2 cakes for next weekend so I don't want to ruin them by not fridging them but I normally don't have space for them so would clean out my fridge before hand if needed. Ideas anyone?