Coffee heightens our senses while beer dampens them. And yet anyone who’s ever handled either beverage knows that coffee is far more precarious in its cup than a freshly poured beer. It turns out there’s a scientific explanation as to why, despite being a little tipsy, you’re less likely to slosh your beer than your coffee.
It all comes down to foam.
Scientists at Princeton University looked at three drinks: coffee, a lightly foamed beer and a heavily foamed beer. What they discovered is that though foam isn’t ideal for drinking, it’s very helpful in protecting against spillage.