Pluck the grapes, wash and halve them. Remove seeds if necessary. Soak gelatine in cold water. Warm up white wine with sugar and lemon juice. Squeeze out the gelatine and dissolve in it. Mix with the grape juice.
Pour some grape jelly into each glass (200 ml content) as a mirror. Chill for about 10 minutes and let it set. Place the grapes, except for a few for decoration, on the jelly mirrors and pour the grape jelly over them until they are covered. Chill for about 3 hours and let it set. Lightly roast almond slivers in a pan without fat, take them out and let them cool down. Serve decorated with the remaining grapes, a blob of sour cream and almond slivers
waiting time approx. 4 hours