Wash the limes in hot water and dry them. Finely grate the zest of 1 lime, squeeze the juice. Soak gelatine in cold water. Beat the egg yolks, sugar and 1 packet of vanilla sugar with the whisk of the hand mixer until frothy. Stir the lime zest and juice into the egg cream. Squeeze the gelatine, dissolve carefully in a small pot and stir in.
Beat 200 g cream and egg white separately until stiff and fold into the lime cream with the whisk. Pour the cream into a bowl and allow to set in the fridge. Whip remaining cream and vanilla sugar until stiff. Pour into a piping bag with a star-shaped spout and spray dots onto the cream. Cut remaining lime into thin slices, cut half on one side and turn into wheels. Decorate the cream with lime wheels, lemon balm and pistachios
Waiting time approx. 1 hour