What is a double martini?

Answer 1

Basically, a double martini is two martini cocktails served in one glass. To mix one, you use twice as much gin and twice as much vermouth, then strain it into a larger martini glass. They are not recommended, as the drink will be warm before you've finished it (unless you're drinking way too fast). It is generally better to order a martini, drink it and order another than to order a double martini.