This is essential for any Harry Potter fan and a great warm comfort while you are watching your favorite Harry Potter film (I don't have a favorite, they are all my favoite!). Be warned it is very sweet and you may need a glass of water or milk by your side when drinking it.Me and my friend drank it when we were having a Harry Potter marathon, we drank them whilst watching the third film as it is when they first have butter beer.
Pour the butterscotch syrup into the microwavable mug and add the butter.
Put the syrup and the butter in the microwave for 1-1 and 1/2 minuets or until they have combined.
Pour the cream soda into the butter and syrup mix, then pour into separate glasses according to how ever many people you are serving (serves 2-3) people.