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If you've never had a Chelada, the idea of mixing beer with Clamato juice may make your stomach turn. This odd combination of beverages has origins in Mexico that date back to the 1940s, when beer was mixed with lime, salt, and hot sauce or salsa. In early 2008, Anheuser-Busch (Budweiser) and Cadbury-Schweppes (Clamato) teamed up to produce the first canned Chelada beverage, which they dubbed "The Red One," and after a successful launch in select western states, the product is now exploding across the country. Many swear by the drink as a remarkable hangover cure, and after some extensive personal experimentation, I must concur.
Source: Top Secret Recipes Unlocked by Todd Wilbur.