Purée the peeled bananas with simple syrup and lemon juice and sieve.
Add water to the gelatin, remove excess, and dissolve in some banana purée over steam.
Add to the rest of the banana purée and beat over ice until the mixture begins to gel.
Beat the egg whites to stiff peaks with sugar and fold into the banana.
Fill individual serving size molds and chill for 2 hours.
In the meantime, melt the dark chocolate.
Cut out circles about the size of the molds.
Fill a parchment paper cone with chocolate and pipe a chocolate lattice onto the circles.
Carefully place in the freezer.
When they are hard, carefully remove from the paper and lay on top of the finished mousse.
Garnish with minced mint.
Notes / Tips / Wine Advice:
You can also make the chocolate lattices in advance and store them in the freezer without a problem. Then you will have a great decoration for many desserts.