“Prune juice.” “Barbecued water.” “Elixir of the gods.”

Those are just some of the phrases used to describe Dr Pepper, the un-pin-downable soda brand whose secret recipe is said to include 23 flavors. This week, we learned that the purplish-red canned beverage (see, even its label contains an enigma!) had joined Pepsi to become the nation’s second-best-selling soda, behind category-dominating Coke, according to trade publication Beverage Digest. (Dr Pepper is technically a smidgen ahead, but it’s essentially a tie.)