Other forms: genoises
A genoise is a sponge cake that's leavened with beaten eggs instead of baking soda or baking powder. Bakers use genoise to make jelly rolls, petit fours, madeleines, and other delicious treats.
Genoise is one of the most versatile kinds of cake because it's fairly sturdy and takes well to being rolled around a filling or soaked with syrup. It's made by beating whole eggs with sugar over heat, then adding flour and sometimes melted butter. This delicious cake gets its name from the Italian city of Genoa, where it was reportedly invented by an Italian baker, although it's come to be strongly associated with French pastry.