Final answer:
The standard pour time for a double shot of espresso on a properly calibrated Mastrena espresso machine is 20 seconds. This precise timing is crucial for achieving the optimal balance of flavors in the espresso shot.
Step-by-step explanation:
The standard pour time of a properly calibrated double shot of espresso on a Mastrena espresso machine is 20 seconds. This timing ensures that the espresso is neither under-extracted (which would make it weak and sour) nor over-extracted (which would make it bitter and burnt-tasting). The extraction time is crucial because it affects the flavor and quality of the espresso shot.
When it comes to calibration, baristas adjust the grind size, dosing, and tamping pressure to achieve the desirable time frame for the best-tasting espresso. If the extraction time is outside the standard 20 seconds, it may require recalibration or adjustment of the machine settings.
In addition, when reviewing units of time:
- 15 minutes + 60 minutes = 75 minutes
- 10 minutes + 20 minutes = 30 minutes
- 15 seconds + 45 seconds = 60 seconds, or 1 minute