Harry Potter and the Prisoner of Azkaban. Butterbeer made its debut in the Harry Potter series in the third installment, Harry Potter and the Prisoner of Azkaban, which was the first alcoholic beverage series to debut in the wizarding world. The butterbeer in the novels, while popular with the students of Hogwarts, is still an alcoholic beverage, albeit one with a very low alcohol content, enough to get a house elf drunk.