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Ultimately, most baristas agree that the best grind size is the one that results in a shot that pulls in 23 to 29 seconds and (Very important!) tastes great. To grind coffee beans for espresso, fill the hopper and activate the grinder for about 15 to 20 seconds.
Brewing Time. The amount of time that the water is in contact with the coffee grounds is another important flavor factor. In a drip system, the contact time should be approximately 5 minutes. If you are making your coffee using a plunger pot, the contact time should be 2-4 minutes.Espresso has an especially brief brew time â the coffee is in contact with the water for only 20-30 seconds.repared coffee begins to lose its optimal taste moments after brewing, so only make as much coffee as youâll drink. Should you need to wait a few minutes before serving, the temperature should be maintained at 180 to 185 degrees Fahrenheit.