Apparently, the butterbeer-inspired frappuccinos are part of a "secret menu" of drinks that aren't actually advertised, according to E! Online.
Butterbeer is the popular drink among wizards in the "Harry Potter" series. The butterscotch-like drink can be served either hot or cold.
Some baristas may know the recipe, but since it isn't actually part of the regular Starbucks drink menu, it's recommended to tell them this recipe when ordering:
A Crθme Frappuccino base, made with whole milk (not skim or 2%, which will mess up the consistency)
3 pumps of caramel syrup
3 pumps of toffee nut syrup
Top with caramel drizzle
In true "Harry Potter" fashion, there is also a warm version:
Whole milk steamer
Caramel syrup (2 pumps for a tall, 3 for grande, 4 for venti)
Toffee nut syrup (2 pumps for a tall, 3 for grande, 4 for venti)
Cinnamon Dolce syrup (2 pumps for a tall, 3 for grande, 4 for venti)
Top with whipped cream and salted caramel bits
Optional: 1 shot of espresso (2 for a grande or venti)
The butterbeer drink is only available for the holiday season, as the coffee chain does not carry toffee nut syrup year round.
Starbucks isn't the only chain with a "secret menu." Check out four other popular places that have off-the-menu items.