Ingredients:
- 1 cup (8 oz) club soda or cream soda
- 1/2 cup (4 oz) butterscotch syrup (ice cream topping)
- 1/2 tablespoon butter
Directions:
Step 1: Measure butterscotch and butter into a 2 cup (16 oz) glass. Microwave on high for 1 to 1-1/2 minutes, or until syrup is bubbly and butter is completely incorporated.
Step 2: Stir and cool for 30 seconds, then slowly mix in club soda. Mixture will fizz quite a bit.
Step 3: Serve in two coffee mugs or small glasses; a perfectly warm Hogwarts treat for two!
source:
http://www.mugglenet.com/misc/rosmertas/butterbeer.shtml