Soften raisins in warm water for 10', dry and flour them.Grate
the lemon finely.
Mix oil, and sugar, until you have a soft cream, add rice flour and potato flour.
Now add nuts, dried fruits, a handful of grated lemon and Borsci.
Finally add the cream of tatar, mix and put the dough in
a large doughnut pan, bake for 1 hr at 160°C.