1) Start whipping double cream adding sugar, to taste. When the cream begins to thicken, add the egg yolks and whip to stiff peaks. Separate whipped cream in 2 separate bowls. Add blueberries to 1 bowl.
2) Place chocolate cookie on a plate add blueberry cream over, place vanilla cookie on top of the cream then add plain whipped cream on top. Decorate with blueberries and peaches.