Lara Mousse

200g chocolate - milk or dark for melting
40g butter
1 tbsp icing sugar
1 tsp vanilla
4 eggs - separated, don't get any yolk in the whites or it ruins it.
2/3 c cream - for whipping and some extra for serving

Whip the cream.
Beat butter, icing sugar and vanilla until creamy.
Add egg yolks one at a time and beat well.
Melt chocolate until smooth.
Add melted chocolate, straight away or it will make chocolate flakes in the mousse, beat until smooth.
Fold in whipped cream.
Beat egg whites until stiff peaks form.
Fold egg whites into chocolate mix until mixed through (do it gently so no air is lost).
Place gently in serving dish and refrigerate overnight.