Mix espresso powder and 2 tablespoons of hot water. Leave to cool. Place 2 paper cups in the recesses of each muffin tray (for 12 cups) and place 1 cookie in each
Separate eggs. Beat the egg whites with salt and 250 g cream separately until stiff. Beat the egg yolks, espresso and sugar with a hand mixer until frothy. First fold in the cream, then the beaten egg white. Distribute in the muffin tray. Freeze for about 2 hours
Whip 125 g cream until semi-stiff, allowing the vanillin sugar to trickle in. Spread a blob of cream on each muffin. Freeze again for at least 2 hours. Dust with cocoa before serving