"An excellent cake from Dr Oetker German Home Baking that's simple and easy to make. Hazelnut cakes are also made in Switzerland and probably other European countries. If you have a kitchen scale I would recommend using the weight measurements as they're more accurate but to make it more friendly to North American kitchens I added volume measurements in brackets. You can find bitter almond essence in German delicatessens and in some supermarkets...."