The secret to the perfect cup of coffee is not using expensive or rare varieties, but in perfecting the art of bean grinding, a study has found.

Espresso coffee is brewed by first grinding roasted coffee beans into grains. Hot water then forces its way through a bed of coffee grains at high pressure, and the soluble content of the coffee ...

Researchers explore the role of uneven coffee extraction using a simple mathematical model. They split the coffee into two regions to examine whether uneven flow does in fact make weaker espresso. One ...