by peacecup on Mon Nov 17, 2008 4:24 am
I agree on skipping the stir, unless you have a lot of clumping. My hand grinders don't clump at all, so I take my shots neither "shaken nor stirred".
And I also agree that the shot looks a little fast - you could grind finer, tamp harder, or dose fuller (I suggest trying only ONE of these at a time, until you get the results you like).
Given that you're using tow pulls, a fuller dose will allow the shot to go longer without blonding, so you could try that first. The PV is not as sensitive to overdosing as some other machines are said to be.
I also agree that the Fellini preinfusion is not needed. That said, I've used it, abandoned it, then came back to it, and I use it regularly. I think it does more than add volume - it preinfuses the entire puck, which allows for a more even extraction. If you do decide to use it, I recommend pulling the lever down and holding just until all the air escapes (i.e. the piston is full), then smoothly pumping the lever once and holding. The ENTIRE preinfusion should be around 10 sec.
Oh, and for the second pull, just keep the lever down long enough for air to escape (i.e. no second pre-infusion).
Sourness can be caused by water that is too cold, I think.
Bitterness is too hot, I think.
And, after all (or BEFORE all) are the beans. I recommend finding a blend you like, and staying with it, including about the same level of freshness (within 2-3 weeks) until you have all of the other variables (grind, dose, tamp, temp) to your liking.
Oh, and I must say that a hand grinder would be a nice addition to the bench for those quiet, reflective times, which seem to produce the best shots,
PC
LMWDP #049
Hand-ground, hand-pulled: "hands down.."