4 cans of cream soda
1/4 cup butterscotch syrup, plus 2 tbsp for whipped cream
1 cup heavy cream
2 tsp vanilla extract
1/4 cup melted butter
Add 2 tbsp butterscotch syrup, melted butter and cream into 1 pint whipper. Screw on 1 cream charger and shake vigorously.
In a large bowl, combine cream soda and butterscotch syrup and stir.
Ladle Butterbeer into glasses and top with whipped cream