Sponge cake the classical homemade cake

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Method:

Separate the egg whites from the yolks in 2 different bowls. Add the sugar to the yolks and whisk. Add the starch and baking powder. Heat the oven. Beat the egg whites. Add them, a little at a time and stirring (delicately) to the mixture. Grease a baking tray and dust it with flour. Pour in the mixture. Put the tray into the oven at a moderate temperature for 30 -40 minutes. Take the tray from the oven and let it cool for a few minutes. Turn it upside down and let the sponge cake cool. Then serve it plain or decorated or in small sweet ‘sandwiches’.