Clamato

Clamato is a commercial drink made of reconstituted tomato juice concentrate and sugar, which is flavored with spices, dried clam broth and Monosodium Glutamate. Made by Mott's, the name is a portmanteau of clam and tomato. It is also referred to colloquially as "clamato juice". It is consumed in Canada, Mexico, and the United States, to a lesser extent. It is very often mixed with alcohol to make a drink similar to a Bloody Mary.