• Add half the container of butterscotch to a large 2 gallon+ beverage container.
• Stir in the 3 bottles of cream soda.
• Add 1 cup whipped cream to the butterbeer drink mix and stir gently. Taste and add more whipped cream and butterscotch if needed.
• To serve: Pour into glasses and top with a dollop of whipped cream and (optional) a drizzle of butterscotch.

For the whipped cream:

• Using a cold bowl and beaters (I put mine in the freezer for about 30 minutes before using) beat heavy cream, brown sugar, and butter extract on high until stiff peaks form.
• Add a large pinch or two (to taste) of sea salt and stir gently to combine.
• Refrigerate until ready to use.