A product of the Mott Company which is owned by Cadbury Schweppes, Clamato is made from a combination of reconstituted tomato juice and reconstituted clam broth. This mixer is a popular choice for Bloody Mary drinks. In Canada it is often called for in the Bloody Caesar which is the Bloody Mary specifically made with Calmato and is widely considered to be the unofficial national drink.

The drink is widely available in stores throughout the United State and Canada.