Yolks are beaten with sugar until fluffy cream. Then meal in a thin stream and stirring continuously. Add grated lemon rind and beaten egg whites. Pour the mixture into a greased and sprinkled with flour form cake. Bake in moderate oven warmed. While cool, prepare the syrup from all products by mixing on medium heat - not too thick. The cake is pricked with a fork and pour the syrup. Quickly replace the lid to absorb better the syrup and when cool, sprinkle with plenty of icing sugar.