Ristretto

A ristretto is a shortened concentrated espresso and is made of the same quantity of coffee as an espresso, but with less water. This makes ristretto the smallest member of the espresso family. The quantity of coffee required is 7 g (+/- 0.5 g). The water temperature of 88° C (+/- 2° C) at the exit from the brew group results in a beverage of 15 ml (+/- 2.5 ml) after 20 seconds, which is 67° C (+/- 3° C) hot when it reaches the cup. The flow pressure of the water should be 9 bar (+/- 1 bar).