599. Pan di Spagna

• 6 eggs
• 170 grams (about 6 ounces) of fine powdered sugar

First beat the egg yolks with the sugar, then add the flour (dried on the fire or in the sun), and after working the dough for about half an hour, pour in two tablespoons of beaten egg whites to soften the mixture. Then add the rest of the ingredients, blending slowly.

You could also beat the eggs on the fire as in Neapolitan Cake. Bake in the ove