How to Make It
Stir together the gelatin and water in a small saucepan, let stand 2-3 minutes or until thick. Heat the mixture over low heat, stirring constantly, until gelatin dissolves. Remove the pan from heat and allow mixture to cool slightly. Do not do this step too far in advance or else the gelatin will set and you’ll have to start over.
Combine the cream, sugar, and vanilla in a large bowl; beat at medium speed with an electric mixer fitted with a whisk attachment until the mixture begins to thicken and form soft peaks. Gradually drizzle in the gelatin mixture. Increase mixer speed to high and beat until stiff peaks form. Use to frost your favorite cake or refrigerate immediately.