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?
Better coffee nerds than me have already answered but my rule of thumb is that anything less than 25 seconds is dish water, 25-30 might be OK for a fruity bean, and anywhere up to 45 can still taste great. On the lever machine I have enjoyed up to 60 seconds. This makes sense as extraction happens as a result of pressure over time.
I’m a medium-dark roast fan - I think lighter roasts would have different ranges.