Soda fountains were once a common fixture in pharmacies, and people truly thought that fizzy drinks could really cure their ailments. In the early 20th century, though, soda fountains took on their own identity. Throughout Prohibition, bars serving alcoholic cocktails and beers were no longer an option, so soda fountains, still often located in drugstores, stepped in as fun places to drink and socialize.
When the US embraced Prohibition, the country's drinking culture radically changed. Speakeasies popped up, illegal alcohol smuggling routes were established, and new drinks exploded in popularity. Among them: The Tomato Cocktail, a hangover cure described in one recipe from the 1929 cookbook "Here's How Again! " as "a very simple concoction" that was "guaranteed to pick you up no matter how low you have fallen." This (admittedly dramatic-sounding) drink is the progenitor of the Bloody Mary we know today.