I’m currently dialing in shots mainly by taste and am wondering if timing is important at all and if will it effect the taste for example if I do 1:2 and want 36g out from 18g in will it effect the taste if its under or over 25-30 seconds as long as I’m pulling the expected 36g out?
Very, a shot at the same ratio for different lengths can taste super difference. The amount of time the water is in contact with the grounds effects the extraction. However, there is no set optimal time, and 25-30 seconds is just a general guideline. I usually prefer my espressos pulled in under 20 seconds.