Start by pouring ½ cup of heavy cream into a mixing bowl. Using an electric mixer, whip the cream on medium speed until soft peaks form—this should take about 2-3 minutes. Gradually add 1½ tablespoons of powdered sugar and continue whipping until stiff peaks develop, about 1-2 more minutes. Set this fluffy whipped cream aside as a delightful topping for your Harry Potter Butterbeer.

In a medium mug, pour in 2 ounces of cream soda and add 1 tablespoon of butterscotch syrup. Using a spoon, gently stir the mixture until the syrup is fully blended with the soda, which should take just about 30 seconds. You want to avoid losing too much fizz.

Pour the remaining cream soda into each mug, filling it to about ¾ full. Gently stir the mixture once more to combine, allowing the carbonation to stay lively and bubbly.

Crown your Butterbeer with a generous dollop of the whipped cream you prepared earlier. Spoon the whipped cream on top and drizzle a bit of butterscotch syrup over the whipped cream, then serve immediately.