For years, I've always assumed that Mott's Clamato was Canadian. Well, I was wrong. It's not. It was originally American. The drink was invented in 1966 by the Duffy-Mott company of New York.
If you don't know it (and there may be many in Britain who don't), it's a blend of tomato juice and clam juice, with a few extra spices thrown in.
The Canadian connexion comes from the Bloody Caesar, Canada's favourite cocktail. In 1969, Walter Chell was challenged to create a new cocktail to celebrate the opening of a new restaurant, Marco's, in Calgary. He came up with a variation on the Bloody Mary, but decided to add clam juice to the tomato juice instead.
Today, Mott's Clamato is owned by Cadbury-Schweppes, and is popular throughout North and South America. It's estimated that approximately 70% of Clamato sold in the United States is bought by Hispanics. The Mexicans mix it with Budweiser beer to make the Chavela cocktail. I think I'll stick with the Ceasar for the time being.