Langkah 4
Pastry Cream: Whisk egg yolks, sugar and flour; pour in part of the milk in order to obtain a smooth cream; add grated lemon peel, salt and the remaining milk very slowly. Cook over moderate heat and keep mixing until thickened. Refrigerate for 30 minutes. Meanwhile, beat the whipping cream gradually. Combine the whipping cream in the cooled pastry cream and keep mixing until well blended.