Measure out confectioners’ sugar.
Sift the sugar. (optional)*
Combine the sugar, cream, and vanilla extract in a mixing bowl.
Whisk the cream until peaks start forming. You're finished when the peaks hold.
If you're using a Kitchenaid (or other food processor); mix on medium-high speed (6-8) for about 2-3 minutes. Once the trails of the whisk become visible, increase the speed to high for an additional 30 seconds to 1 minute.