Place the heavy cream, powdered sugar, vanilla extract, and butter extract into a medium-sized bowl. With an electric hand mixer, whip until stiff peaks form.
1 cup heavy whipping cream, ¼ cup powdered sugar, 1 teaspoon vanilla extract, ½ teaspoon butter extract
Add the butterscotch syrup to the bowl and fold it in gently until there are no streaks left. Place the bowl into the fridge until ready to serve.
⅓ cup butterscotch syrup
In a large bowl or pitcher, add about 1 cup of the cream soda, the butterscotch syrup, and butter extract. Whisk until the syrup has dissolved into the soda.