Espresso Tonic Surfer

Select and pre-chill a highball glass.

Prepare a long lemon zest twist for garnish.

Pull a shot of espresso and allow it to cool.

Pour the chilled tonic water into the prepared glass, followed by the sugar syrup.

Fill the glass with ice.

Float the cooled espresso over the top.

Express the lemon zest over the cocktail and place it as a garnish.