Grace Under Pressure: A Photo Glossary of Espresso Drinks
By definition, espresso is a relatively simple: 1 oz of coffee beverage made from 7 grams of ground beans, brewed under 9 bar of pressure, at roughly 200 degrees F. Plus or minus. To give you some context, the highest-pressure showerheads top out around 100 psi — not quite enough pound force to make it rain crema. Espresso is both brewing process and beverage invented by the Italians (c. 1884), its name implying speed and singularity of purpose. Our friends at La Colombe Torrefaction were kind enough to meet us one morning during the Fortnight to make the battery of espresso beverages. They were as good as they look. And none of us slept that night.