Almond Flour Sponge Cake

This cake contains whole eggs plus additional egg whites. The whole eggs are required to provide body—the cake contains very little flour and needs something to hold it together—while the whites add airiness. The steps for making the cake are also somewhat unusual because the flour is mixed with the eggs at the beginning. The almond flour gives the cake a nutty complexity and a dense crumb, which makes it easy to slice into as many as four layers. You can use this cake in the same way as an