grease with vegetable oil one 10" spring-form pan and line with greased wax paper chop nuts and dates. Process chocolate in food processor or grate on the large cut of food grater In a large bowl cream butter and sugar until light and fluffy. add egg yolks one at a time.
Fold in nuts, dates and chocolate pieces In another bowl whip the egg whites until they form soft peaks and fold all but 1/2 cup into the butter mixture. Pour into prepared pan bake for 40-50 minutes at 375. Let cool for 15-20 mins before turning out.
Melt 3 oz. white or dark chocolate and pour over cooled cake and refrigerate for at least two hours. Cut with hot knife Serve with fresh cream and maybe rose petals.