The skilled hand of the barista What is espresso?

  • Espresso is a 25-30ml (50-60ml for a double) beverage prepared from 7-9 grams (14-18 grams for a double) of coffee through which clean water of 90.5 °-96.1°C has been forced at 9-10 atmospheres of pressure, and where the grind of the coffee is such that the brew time is 20-30 seconds.
  • While brewing, the flow of espresso will appear to have the viscosity of warm honey and the resulting beverage will exhibit a thick dark, golden crema. Espresso should be prepared specifically for, and immediately served to its intended consumer (as defined by the Specialty Coffee Association of America).