If the machine has a temperature option, set it to 93 °C.

Grind the coffee for espresso, fine grind.

Place the ground coffee in the portafilter and distribute it to create an even coffee bed.

Perform the tamping with the tamper on the portafilter using some pressure, and make sure the tamper is level.

Start the timer and the extraction at the same time.

Stop the extraction at 31 seconds.

Attention: ensure that 43 g (liquid) are extracted in 31 seconds. If it was faster, grind finer; if it was slower, grind coarser.