Today is National Dry Martini Day!
Martinis are traditionally made from gin and vermouth, although vodka is more popular.
It’s not clear who invented the first cocktail, but it was made with equal parts of gin to vermouth. These days that ratio is more like two parts alcohol to one part vermouth.
A dry martini uses dry vermouth but that’s not the only way to make a martini dry – the less vermouth in a martini, the drier it is, so, dry can also refer to the alcohol ratio.