Thanks Shadow 745! Your comment is very helpful. I cared about the numbers and conditions, but to be honest I agree with your opinion. My condition is out of what is generally recommended, but similar condition as yours makes better results. I'll trust my taste (I like ristretto, too) and...
It’s generally said that extraction time should be 20-30 seconds. When they say “extraction time,” it sometimes includes infusion time (steeping time), i.e., the time from pushing the button until it starts extracting (dripping); and sometimes they count from when it actually starts extracting...