This moist walnut cake is sandwiched together with a delectable cream, which is flavoured with coffee, vanilla and a dash of Polish spirit, vodka or cognac.
Preheat the oven to 190°C/375°F/Gas 5. Grease and line a 20cm/8in cake tin (pan). Beat the egg yolks with the sugar until thick and creamy. Stir in the nuts, then fold in the flour.
In a separate bowl, beat the egg whites until soft peaks form. Fold a