Ingredients for 1 cake in a 20/25 cm mould

Procedure

Separate the egg yolks from the egg whites and whip the latter until stiff in the planetary mixer or with a whisk. Then place the egg yolks and sugar in a bowl and beat them with the whisk until you obtain a light and fluffy mixture. Add the flour mixture, the yeast, the vanillin, the oil, the milk, the salt and always work with the whisk until you obtain a homogeneous mixture. Add the whipped egg whites and the lemon zest and mix delicately from bottom to top. You can add ingredients as you like (chocolate, hazelnuts, apples, etc...) Cover a cake tin with baking paper (or grease it with oil or butter) and pour in the mixture. You can use any type of mold (e.g. muffins, cakes, donuts, etc...). Bake at 180° for approximately 20/25 minutes (ventilated oven). Let cool, dust with icing sugar and serve.