Fill a shaker with ice cubes. Add all ingredients. Shake and strain into a cocktail glass.
There are few drinks as iconic and with so many variations; the martini comes in all possible flavors. Here is an easy, excellent way to spice up the classic. Grenadine – which by the way is a good bottle to keep around the home bar as it can add a sweet redness to many drinks – and orange bitters give the martini a completely new taste and pink look.