Move over iced coffee, there's a new drink in town. Iced coffee is a staple for many coffee drinkers during the hot summer months, but there's an entirely different way to get a cool Caffeine fix -- and it comes with bubbles.
No; it's not soda. It's a coffee tonic -- an unlikely combination that produces a bright, tangy, fizzy beverage perfect for seasonal sipping.
Read more here: http://www.wtop.com/1228/3671897/WTOPs-top-bagel-place-is-