Originally Posted by Kitagrl
See now here's the thing...on my cake that bubbled (it was the smaller cake in the navy flower ones I uploaded recently...the bubble happened on the smaller cake above the flower, you cannot see it in the pic because it did not happen yet) I had a HUGE boo-boo in the fondant, and basically the entire place under the flower was ripped. So technically until I put the flower on, there was room for air to escape. But the air didn't start to try to escape until it came to room temp.
So I guess the straws would not work unless the cake was allowed to come to room temp...?
I make my escape hole for the air just after covering a cold cake with fondant. Then the cake sits out at room temp for 12 hours before I decorate. This lets the cake settle completely while coming to room temp and the air forms/gathers/escapes.
I only do one hole and I always know in advance where my decorations will be going. And as someone has said, you just make a hole with the straw or dowel. You can't leave it in for any time or the escape hole won't work, because it's filled with dowel or cake filled straw, and thus not a good escape route.