The Espresso Martini cannot be fully batched. The drink's distinctive crema — the pale beige foam that defines it — is generated by shaking freshly pulled espresso hard with the other ingredients while the espresso is still hot enough to froth. Pre-mixed espresso flattens within a minute and loses the foam permanently. So this is a hybrid batch: the alcohol portion lives shelf-stable in a bottle for weeks; the espresso is pulled per order. The bartender shakes one drink in fifteen seconds instead of measuring four.
Wake me up, and f*** me up.
— attributed to Kate Moss (probably apocryphal; the famous origin story for Dick Bradsell's 1983 drink at Soho Brasserie)What's in the bottle
Vodka, coffee liqueur, and a measured amount of simple syrup — the three shelf-stable components. The bottle is essentially a flavored vodka at proof; nothing in it can spoil. Pre-mixing eliminates three of the four pours at service and means the bartender's hands hold a shaker and a portafilter, not four bottles.
For the coffee liqueur: Mr Black is the modern bartender's standard — cold-brew based, balanced, not too sweet. Kahlúa is the classic and works fine; it pushes the drink sweeter and you may want to dial down the simple syrup.
Service: shake with fresh espresso
Per drink: 3 oz from the bottle plus 1 oz freshly pulled espresso (a double shot from any espresso machine, or 30 g of strong moka-pot coffee). The espresso must go straight from the portafilter into the shaker — within 30 seconds — while it's still hot. Shake hard for at least 15 seconds with plenty of ice; the hot espresso plus cold vodka creates the foam mechanically.
Double-strain into a chilled coupe. Garnish with three coffee beans — the convention is one for health, one for wealth, one for happiness.
Shelf life
The bottle holds 60+ days refrigerated without measurable degradation. The simple syrup may crystallize slightly at the bottom over time; a quick invert before each pour redistributes it. The whole bottle's worth of espresso is, of course, made fresh.