First, add the wine (or water) and the sugar to a little pot. Place the pot over medium-low heat on the stove and stir for a couple minutes while the sugar dissolves. Transfer it to a little heat-proof container or a mug.

Then, stuff the prunes with walnuts and place them in the same little pot.

Pour the wine-sugar mixture over the prunes.

Place a lid over the pot and put the pot on the stove over low heat and let the prunes simmer for about 10-15 minutes.

After 10-15 minutes, lift the lid and make sure the alcohol has evaporated and the liquid is a syrup. If not, keep simmering the prunes until you can no longer smell the alcohol and the wine-sugar mixture (or water-sugar mixture) has turned into a syrup.

Once done, remove the pot from the heat and let the prunes cool. Once fully cooled, your walnut-stuffed prunes are good to serve.

Pour the cream and the powdered sugar in a large bowl and whip the cream with the hand mixer until you get soft peaks.

Layer the prunes and the cream in a tall glass and (optionally) decorate with grated chocolate on top of the final layer of cream.