Starbucks stores around the country will be offering visitors free samples of its Nitro Cold Brew coffee all day long on August 2.
If you've never had nitro coffee, now you can ... totally gratis. Unlike regular iced coffee, nitro is cold brew coffee that's available on tap and is infused with tiny nitrogen bubbles, giving it a creamy, rich texture.
So whatisthe real difference between regular cold brew and the nitro kind? It comes down to science, which is why Starbucks recruited Bill Nye (yes, 90s kids, "The Science Guy") to explain the process in a new video.