The definition of an espresso according to the 2020 World Barista Championship Rules and Regulations

The definition of an espresso according to the 2020 World Barista Championship Rules and Regulations is as follows:

1. Espresso shot volume: 30mL +/- 5mL

2. Brewing temperature: 90.5 to 96°C

3. Brewing pressure: 8.5 to 9.5 bars

4. Shot time: 20 - 30 seconds