Originally Posted by kvand
We call those air bubbles cake farts. When your cake comes back to temperature it releases gasses which create air bubbles or blow outs. It happens every time I let a cake get too cold before applying the fondant. If you only refrigerate enough for the Bc to firm up but not enough for the cake to get really cold it shouldn't happen. (5-10 in the freezer or 10-15 in the fridge) it also helps if there is a hidden spot in the top of your cake that you can poke a hole to let the gasses escape. Do you allow your cake enough time to settle after filling and stacking? That could also be part of the problem. I let mine settle overnight when possible but at least a few hours. Hth:)
Maybe I'm not leaving mine in the fridge long enough for the buttercream to get stiff??
Hmm. And yes . I lately have also been making my cakes ahead of time , freezing them, then the day of, I take them out to thaw then I apply the filling and buttercream.
Now that I think about it , this started happening when I start freezing my cakes.
Could that be the problem?