For the coffee-chocolate pudding, simmer whipped cream with sugar and vanilla sugar for about 7 minutes. Break the chocolate into pieces and add to the whipped cream with the hot coffee and instant coffee.
Stir well until the chocolate has dissolved, set aside. Soak the gelatin in cold water, squeeze out the gelatin with your hands.
Add to the whipped cream while it is still hot (but no longer boiling) and stir to dissolve. Pour the mixture into ramekins and chill, after at least 6 hours turn out the molds and decorate the pudding with whipped cream and chocolate flakes.