Peel the melon pulp from the skin and remove the seeds. Dice the fruit flesh, puree with lemon juice, sugar and cherry liqueur using the hand blender. Soak the gelatine in cold water. Heat up some melon puree, dissolve the gelatine in it and mix with the rest of the puree. Pass the melon puree through a sieve and distribute in 4 timbal moulds (125 ml capacity). Chill for about 3 hours.
Then beat the cream with the whisk of the hand mixer until semi-stiff. Let the vanillin sugar trickle in. Dip the moulds briefly in hot water and turn the jelly out onto plates. Add the cream blob. Crumble the lady fingers and sprinkle over the jelly. Decorate with mint