For an extra layer of flavor, try using a high-quality butterscotch topping. The better the butterscotch, the richer the Butterbeer. Adjust the amount of lemon juice to your preference. Start with 1 teaspoon and add more if you desire a tangier flavor. To make a non-dairy version, use coconut whipped cream and dairy-free butterscotch topping. For an adult twist, add a shot of butterscotch schnapps or vanilla vodka to each Butterbeer.