Bring the sugar and milk to the boil. Stir in the softened gelatine and the red currant pulp. Let cool down a little and put in the refrigerator until the gelatine just begins to set.
Take 540 ml of the cream and whip with 60 g of icing sugar until it is semi-stiff. Now fold this into the currant-gelatine mixture.
Place in a 2 liter casserole dish and refrigerate for at least 6 hours until the mixture is completely firm.
Before serving, turn out onto a platter and decorate with rosettes from the piping bag with the rest of the cream and powdered sugar that has been whipped to a stiff consistency. Garnish with fresh currants.