Foam or No Foam? New Study Says Which Coffee Drinks Are Less Likely to Spill

In the latest round of coffee versus lattes, lattes win.

A new study published Tuesday has discovered how the foam on lattes makes them less likely to spill than regular coffee, the Washington Post reported.

The study came to fruition as a Starbucks employee told Emilie Dressaire, an assistant professor at New York University’s Polytechnic School of Engineering, she didn’t need a stopper lid to keep her latte from spilling. Dressaire’s colleague at the at the French National Center for Scientific Research, Alban Sauret, had noticed the same effect in beer.

It just so happened that both drinks contained foam on the top, leading them both to wonder how it could keep liquid from sloshing over the rim of the cup.

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