H Wyman wrote:Wow. Okay -- I'd never heard of this thing, and now I'm intrigued. I'd still have to hold out for one used or refurbed -- but the intrigue is there. I had just assumed that the headline "presso" was short for "handpresso," which is also a fascinating design but doesn't seem to have garnered the following of the Twist. I share your concerns over the Twist's reliance on cartridges, and there's an undeniable elegance to the design of the Presso. Seems like it takes the principle of the Aeropress to its logical conclusion -- a hand-powered press that actually generates enough pressure to get the job done.
How hard to do you really need to push/squeeze to hit 9 bars (130 psi) on that thing? How do you manage to maintain the pressure consistently while also drawing out the process to allow for a 20-25 sec extraction? The video clip (
http://vimeo.com/18794871) looked like the operator finished the shot in less than 20 sec, although I recognize that could've just been the way it was edited. It did also look like he barely tamped it, though, and it doesn't seem to come packaged with much by way of a tamper. Does it not need tamping? And, finally, there's temperature: Do you do a preheating press of boiling water before putting your coffee in there?
I just did a little snooping and it seems there's been a flaw identified, and recitified, by a tinkerer. Here's that link:
http://users.ameritech.net/jim_schulman ... eport.htmlIt's something about a gap in the inner workings resulting in pressure loss before water contact, resulting in thin shots and meek crema. Have you run into that problem and addressed it?
How would you rate your cups against pro baristas' on pro machines?
And, I gotta ask... Does it open wine bottles, too?

Awesome questions, especially the last one. heh heh
I moved from an Aeropress to the Presso and I haven't used my Aeropress since. I just don't want to pick up an espresso machine due to our kitchen layout so when I found the Presso I figure I'd be set. And, I believe I am set.
That Presso report you found is an excellent reference. I haven't had the pressure issues that he resolves but keeping everything to temp is difficult. I can't tell if he was double-pumping the Presso or not, but a quick double-pump for me maintains the pressure.
I've had about 12 people (all coffee fanatics and working baristas) over so far in the last month to try it out and no one has trouble pushing the arms down, that goes from me all the way down to my 100lb barista friend from Intelligentsia Venice. 3 have since picked up Pressos on Ebay, actually I wish they'd supported
http://presso.us instead.
I've nailed down my grind, dose, and tamping (yes, I tamp at the same pressure that my barista friends have taught me), and I've timed myself enough that I'm getting 25-30 second extractions. BTW, the tamper that comes with it is just dumb. It's a combo scoop and tamper and it does neither well. I picked up a 49mm tamper because of this and I don't even use what came with the Presso for a scoop.
I'm pulling shots with it that are far better than espresso I've had at places other than the likes of Intelligentsia, Ritual, Blue Bottle, etc. I doubt I could get really close to the quality of a shot at a place with well-trained and enthusiastic baristas working on good equipment, but I love the results. In fact, I love it so much I'm not even considering getting an espresso machine when we move to our new place, a place where we'll actually have room.
Oh, and back to temps. I let hot water sit in the filling chamber for several minutes, and then push a couple of ounces of water through, I keep my portafilter very hot, and then go for it. Otherwise, you will get sour shots as mentioned on that report you found.
Cheers,
Greg