By the way, if you are willing to add a third ingredient, a little squeeze of orange juice would take this drink over the top (though if you want to go all in on the orange juice/coffee mash-up ...

Irina Sergeevna / Getty Images (2) To be clear, I did not invent this drink. The combination of espresso and tonic water originated in Sweden in the early aughts, allegedly created by a barista at ...

2. Top it off with black iced coffee and add a straw. The ratio is up to your preference. I used equal parts OJ and coffee, but if you like it sweeter, use more juice.

Citrus and coffee may seem like an unusual flavor pairing, but to barista Paul Judy, it just makes sense. “Coffee has a lot of natural acidity to it already,” explains Judy, who works at Valor ...