Beat the eggs and caster sugar in a bowl over a double boiler until the mixture is at skin temperature. Remove the bowl from the double boiler.
Continue beating the eggs until it reaches the ribbon stage. You know it ribbon stage when you draw lines with the batter and they don't disappear within 3 seconds.
Sift the flours evenly over the surface of the egg batter. Even so that the flours won't just sink into the egg mixture.
Fold the flour as quickly as possible, but do it the right way too! (This is called the J-fold) When you still can see the flour, add in the fat mixture and continue to fold. Do not underfold or your bake will not be even. Overfold and you will have a flat cake.
You know your batter is ready when it is smooth, like really smooth and has a ribbon consistency again. There are three ways to bake for a layered cake: 1. bake a thin layer, like a swiss roll and then use a cutter to cut the shape of the cake. 2. bake one cake and slice it either 2 or 3 layers. 3. Use 2 or three tins to bake the cakes and then stack them when putting them together.Choose one. I use different methods for different occasions. Line the bottom of the cake tins, and pour the cake batter into them. If you are using 2 or 3 tins, using a weighing machine to portion. Use a spatula to even spread the cake to every corner and level it.
Baking time depends on how thick your cake is. If you are baking a thin layer or in 3 tins, 12 minutes. One big cake, 45 to 50 minutes.The cake is done when a skewer comes out clean after running through the middle of the cake. Cover the cake with cling wrap to keep all the moisture once it comes out of the oven.
Cool the cake, and cut if you had baked a thin cake. Keep the cling wrap and parchment paper
Sprinkle each piece of cake with the glazing syrup.