Sponge Cake

Technical stages for Sponge Cake :

• Butter and flour a cake pan. Keep refrigerated. Putting butter and flour ensures an easy unmolding of the cake.
• Mix in a metal bowl the eggs and sugar. Put the bowl in a bain Marie and whisk until pale and three times the original volume. It should take 10-15 minutes with a wired whisk and 5-10 minutes with a hand-mixer.
• Take the mix out of the bain Marie and keep whisking until fully cooled. What you obtain is called "au ruban".
• Combine gently with the flour, using a wooden spatula and trying not to let the mix fall.
• Pour the dough in the baking pan and bake at 180°C or 356°F for 15 to 20 minutes.
• Check if the cake is ready by inserting the blade of a knife in it: if it comes out dry, it is baked.