Now that Spring has sprung, ice coffee season is well and truly upon us -- and this iced espresso is the perfect way to ring it in. The Espresso tonic is a bubbly cold coffee that adds a little fizz to your caffeine.
To make your own at home, pour a long shot of espresso over tonic water on ice. The resulting beverage is both sweet, citrusy and creamy. The effervescent iced espresso also has a Guinness-like head.
The espresso tonic (otherwise known as caffe tonics or black tonics) can be found on the menus in cities across the world, but this one in particular can be found at the San Francisco-based Saint Frank Coffee shop.