Espresso heads have long argued over how to achieve the ideal pull, from which beans to use, how to grind them, and what snazzy machines to invest in. Now, a new study published in material sciences journal Matter seems to have identified the key to the perfect pull, and it’s much more simple — and inexpensive — than you might think.
According to the study, researchers discovered that adding a splash of water to coffee beans prior to grinding them results in a more delicious and more consistent espresso. The scientists say that this technique has the potential to help industrial coffee brewers and baristas alike overcome a major obstacle in brewing espresso.
