Altering water temp adjusts extraction in the same way as altering any other variable, so if you count it as a fixed variable then you need to grind finer or dose up if the water is cool. I never really understand deliberately using cooler water unless you’re aiming for under-extraction like you might if you’re trying to tame a toasty dark roast.
Altering water temp adjusts extraction in the same way as altering any other variable, so if you count it as a fixed variable then you need to grind finer or dose up if the water is cool. I never really understand deliberately using cooler water unless you’re aiming for under-extraction like you might if you’re trying to tame a toasty dark roast.