Combine 1 cup cream, 2 tablespoons powdered sugar, and 1/2 teaspoon vanilla extract in the chilled bowl. (acouplecooks.com)
Then add 1/4 cup potato starch, 1/4 cup unsweetened cocoa powder, 1/4 teaspoon salt and 1 teaspoon pure vanilla extract and mix well. (glutenfreenosh.com)
Leave out the cocoa, add 1/2 tsp vanilla extract, and switch the milk to buttermilk. (glutenfreeonashoestring.com)