I wanted to make it clear that this wasn’t your everyday, run-of-the-mill cupcake. If you’re not familiar with it, we have a policy directly related to the UK liquid bomb plot of 2006 called 3-1-1 that limits the amount of liquids, gels and aerosols you can bring in your carry-on luggage. Icing falls under the “gel” category. As you can see from the picture, unlike a thin layer of icing that resides on the top of most cupcakes, this cupcake had a thick layer of icing inside a jar.
In general, cakes and pies are allowed in carry-on luggage, however, the officer in this case used their discretion on whether or not to allow the newfangled modern take on a cupcake per 3-1-1 guidelines. They chose not to let it go.