From the bottle: The dirty Martini, "dirty" because of the olive juice brine that colours the otherwise clear liquid, has marked special gatherings for some time.

Did you know: When President Franklin Roosevelt repealed Prohibition in 1933 he celebrated with the first legal Martini, a Dirty Martini; two parts gin, one part dry vermouth, a teaspoon of olive brine, an olive, and a lemon peel rubbed around the rim of the glass.