Mix cream and crème fraiche in a saucepan. Scratch the vanilla pod lengthwise and scrape out the pulp. Bring the vanilla pod and vanilla pulp, 50 g sugar and lemon zest to the boil and simmer over medium heat for about 10 minutes, stirring occasionally.
Soak gelatine in cold water. Pour the cream mixture through a fine sieve. Dissolve the gelatine in the hot cream. Divide into four bowls. Cover and allow to set in the fridge for approx. 4 hours.
Sort the raspberries, wash briefly if necessary. For the zabaglione, beat the egg yolks, 50 g sugar and Baileys in a hot water bath with the whisks of the mixer for about 8 minutes until frothy. Spread the raspberries on the panna cotta and immediately add the Baileys foam.
Decorate with mint leaves.