The peculiar Kaffe & Tonic (aka. Espresso Tonic) was invented in Oslo in 2007. At staff party attended by Anne Lunell and Charles Nystrand, a colleague mixed some espresso with tonic and syrup to create a quick, alcohol-free cocktail. The drink was found to be quite refreshing. Later, Lunell and Nystrand opened the Koppi Roaster’s Cafe in Helsingborg. Kaffe & Tonic was put directly on the menu. The ‘instagrammable’ nature…