Every generation before millennials treated iced coffee the way they treated rosé — a warm-weather concession, not a lifestyle. Millennials started loosening that logic. Gen Z dropped it entirely. Dunkin' reports cold drinks now represent two-thirds of total beverage sales; at Dutch Bros, it's 90%. Ten degrees outside, snow falling, cold brew in hand. The weather became irrelevant.

Clear plastic cups photograph. Foam can be dyed green. Caramel ribbons and glitter suspensions require a cold, still liquid to exist as designed. The drink didn't just appeal to younger consumers aesthetically — it was engineered, product by product, to perform on a phone screen. Hot coffee poured into a ceramic mug produces a thin curl of steam. Not much to work with. The other drink has a Wicked collaboration.

Iced coffee is, functionally, what happened when America tried to turn coffee into a soft drink. Ready-to-drink cold coffee consumption rose in the U.S. well above the global rate. The parallel with energy drinks isn't incidental. It's the same pitch: caffeine, customisable sweetness, format designed for mobility. Starbucks is no longer competing with Italian espresso culture. It's competing with Mountain Dew.

Europe's slower adoption gets attributed to climate, but the more precise explanation is that Europe already has a coffee identity to protect. So do Turkey and Brazil. None of them are especially eager to swap it for a cup with a dome lid and three pumps of vanilla syrup. America never had that anchor. Its coffee culture was more permissive. So far.