Mix together 1 envelope unflavored gelatin and 3/4 cup sugar.
Add 1 cup boiling water and stir until dissolved.
Add 1 cup whipping cream (not whipped cream - comes in a carton in the refrigerated section - also not heavy whipping cream) and refrigerate until slightly cooled.
Add 1 1/2 teaspoons vanilla and 1 cup sour cream.
Beat 2-3 minutes until frothy.
Pour in a bowl or into individual cups and refrigerate.