Hello, all! Since the Wizarding World opened, fans everywhere have been wondering how you can get Butterbeer from home. Beside making your own (I have a recipe that taste just like the park's brew), a company called Reed's has made the genius decision of bottling their own "butterscotch beer". I have personally tried it and it tastes very close to what is in the parks. The aftertaste is a bit different because they use the natural sweeteners but overall it's pretty close. Anyway, here is all the info. There is a map showing you what stores near you sale their products. It was hard to find, but worth it for any Potter fan.
http://www.reedsinc.com/butter-beer/
http://www.reedsinc.com/butter-beer/