Raspberries, like strawberries, taste best while fresh. You will prepare an incredibly simple and irresistible raspberry dessert using integral biscuits and sour cream. Put a layer of crumbled biscuits in a glass or deeper dessert bowl, then add raspberries, sour cream over them and repeat the process until you have used up all the ingredients. You can pour raspberry puree over this dessert. To make raspberry puree, it is enough to mix fresh raspberries in a blender, without added sugar.