Separate eggs. Beat the egg whites until stiff, then add 75 g sugar. Beat the egg yolks separately. Sift flour, starch and baking powder on top and fold in
Spread on a baking tray lined with baking paper (approx. 35 x 40 cm). Bake in a hot oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) for 10-12 minutes. Turn out onto a tea towel sprinkled with 2 tablespoons of sugar. Remove paper immediately. Roll up the sponge cake with the cloth and let it cool down
Wash and clean the strawberries and, except for about 12 strawberries for decoration, dice them. Roll out the sponge cake and spread with jam
Whip the cream until stiff, sprinkle with sauce powder. Fold in liqueur. Spread 3/4 of the cream on the sponge cake. Add berries and press in a little. Roll up the sponge cake lengthwise. Chill for about 1 hour.
Cut the roll into pieces and decorate with the rest of cream, berries, pistachios and mint. Possibly put in cuffs