Science Finally Explains Why Coffee Spills More Easily Than Beer

The research on why foamy liquid (such as beer or latte) is less likely to slosh out of a cup than non-foamy liquid (such as black coffee), has now been formally published. The study is:“Damping of liquid sloshing by foams,” A. Sauret, F. Boulogne, J. Cappello,Emilie Dressaire and H.A. Stone,Physics of Fluids, vol. 27, 022103 (2015).

The slosh team presented their work in public a few months ago, at the Annual Meeting of the APS Division of Fluid Dynamics.

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