Cakes originate from ancient Roman traditions of offering them to gods as symbols of fertility and plenty. Different cultures developed distinctive cakes such as France's croquembouche wedding cake and Vienna, Austria's prized Sacher Torte. Cakes are generally composed of layers including a cake base, sugar syrup, and icing or filling. Important guidelines for cake making include preheating the oven, using room temperature ingredients, avoiding overmixing after adding flour, and testing for doneness with a clean tester. Whipped egg whites progress through stages from frothy to stiff peaks.