Sponge cake - Video recipe!

Preparation

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  In a bowl, put the eggs, the salt, the vanilla and half the sugar.
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  Whisk at full speed for around 5 minutes. The eggs must swell a lot and thicken. Add the other half of the sugar, and beat for a couple minutes.
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  Sift the flour on the batter, and gently mix until it is incorporated.
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  Pour in a greased mould, and bake 30 minutes at 350°F (180°C).
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  There you are, your sponge cake is ready!