Fans of "The Great British Baking Show" and its offshoots may remember the occasions when contestants have been asked to bake an opera cake. It may have even been the first time you'd heard of ...

Refrigerate the opera cake for two hours to set the layers and make it easier to trim. Trim the edges using a sharp knife to reveal the layers.

Saying opera cake is delicious doesn't do it justice at all. The delicate almond sponge layers -- known as joconde -- rich buttercream, smooth chocolate ganache, and coffee syrup make this French ...