Begin by pouring ½ cup of heavy cream into a mixing bowl. Using an electric mixer, whip the cream on medium speed until you reach soft peaks, which should take about 3-4 minutes. Gradually add 1½ tablespoons of powdered sugar while continuing to whip until stiff peaks form.

In two sturdy mugs, pour 2 ounces of chilled cream soda into each. Next, add 1 tablespoon of butterscotch syrup to each mug, stirring gently with a spoon to ensure the syrup is evenly mixed.

Slowly pour the remaining cream soda into each mug, filling them to the brim. Gently stir the mixture to combine without losing too much carbonation.

Top each mug generously with the whipped cream, allowing it to heap slightly. Drizzle additional butterscotch syrup over the whipped cream for garnish.