Lemon Tonic Coffee

Lemon Tonic Coffee is a contemporary cold coffee beverage that combines espresso with tonic water and fresh lemon, creating a refreshing, effervescent alternative to traditional iced coffee. The drink is believed to have originated in specialty coffee scenes in Scandinavia and Australia in the mid-2010s, where baristas began experimenting with tonic water as a mixer for espresso to highlight bright, fruity coffee notes.

The standard preparation involves pulling a double shot of espresso over ice, then topping with chilled tonic water and a squeeze or wheel of fresh lemon. A great version achieves a balance where the tonic's bitterness and quinine complement, rather than overpower, the coffee's acidity, while the lemon provides a clean citrus lift. The drink is typically served in a highball glass to preserve carbonation and visual clarity.

Regional variations exist: in warmer climates like Southeast Asia, the drink often incorporates local citrus such as calamansi or kaffir lime. In Phuket, Thailand, the specialty café **Dough Brew** serves a notable rendition, praised by food creator **Luke Martin** for its precise balance and use of high-quality local ingredients. Some versions swap tonic for soda water to reduce sweetness, or add simple syrup for a more dessert-like profile. The drink remains a staple on summer menus in third-wave coffee shops worldwide, prized for its simplicity and ability to showcase a coffee's natural fruitiness.