Gallery: Guest Bartender: Make the Stay Up Late with Theo Lieberman of Lantern's Keep

Fresh is essential
Fresh is essential

In a drink so simple, fresh citrus is not debatable. Juice a lemon at the last possible moment.

Lemon
Lemon

Add 3/4 ounce freshly squeezed lemon juice to a cocktail shaker.

Simple Syrup
Simple Syrup

Add 3/4 ounce simple syrup to the shaker.

Time for the gin
Time for the gin

Add 1.5 ounces London Dry gin, such as Beefeater.

And cognac
And cognac

Add 1/2 ounce cognac such as Pierre Ferrand. Then fill shaker with ice.

Give it a little shake
Give it a little shake

Shake briefly—you don't want to introduce too much water through dilution.

Strain and pour
Strain and pour

Strain into a rocks-filled highball glass.

A little fizz
A little fizz

Top with club soda.

Say ahhhhhh.
Say ahhhhhh.

Garnish with orange wedge, brandied cherry, and a straw, then enjoy!