Moderators: Jenise, Robin Garr, David M. Bueker
Carl Eppig
Our Maine man
4149
Tue Jun 13, 2006 1:38 pm
Middleton, NH, USA
Howie Hart
The Hart of Buffalo
6389
Thu Mar 23, 2006 4:13 pm
Niagara Falls, NY
Jacques Levy wrote:Ok, so how is that different from a percolator? or those espresso pots in every Italian apartment? What am I missing?
Jon Peterson
The Court Winer
2981
Sat Apr 08, 2006 5:53 pm
The Blue Crab State
Howie Hart wrote:Jacques Levy wrote:Ok, so how is that different from a percolator? or those espresso pots in every Italian apartment? What am I missing?
In a percolator is the water is heated in a confined space and forced up through a tube, where it then drips through the coffee grounds and back into the water, where it gets reheated and recirculated, thus, overheating (and burning) the brewed coffee in the process. In the vacuum system, the water is forced through the coffee grounds once, where it is mixed together. When the heat is turned off, the water vapor wants to condense back to a liquid, causing a vacuum, thus, sucking the brewed coffee back into the now cooler lower vessel.
In the espresso maker you pictured, the water in the bottom is heated up and steam is forced through the grounds between the two chambers and the brewed espresso is collected in the top chamber. Quite different from the vacuum system.
Howie Hart
The Hart of Buffalo
6389
Thu Mar 23, 2006 4:13 pm
Niagara Falls, NY
Howie Hart
The Hart of Buffalo
6389
Thu Mar 23, 2006 4:13 pm
Niagara Falls, NY
Hoke
Achieving Wine Immortality
11420
Sat Apr 15, 2006 1:07 am
Portland, OR
Mark Lipton wrote:Fascinating, JB. I'd never heard of this method of coffee brewing before. It's like a combination of espresso and French press in its preparation. One concern I have regards its safety: we are taught in undergraduate chemistry labs to never heat a liquid inside a closed glass vessel because of the pressure buildup within that could result in an explosion sending glass shards flying at high velocities. So, is there some sort of steam vent in the upper glass globe? If not, I'd be very leery of using this apparatus on a regular basis.
Sorry for being such a wet blanket (at least I'm telling you that the coffee's corked! )
Mark Lipton
ETA: I see that black cap on the upper globe: does it act as a vent, or is it does it just blow out at high enough pressure? It's also interesting that one can vary the strength of the coffee by controlling how much of the water in the lower globe one evaporates.
Howie Hart wrote:I sometimes see the vacuum coffee makers in Goodwill, Salvation Army and second hand stores, but never thought of getting one. I'll keep an eye out for one.
Jon Peterson wrote:I have a pen on my desk with two small glass globes on the top. There is liquid in the globes and if you place your warm fingers on the bottom globe the liquid bubbles up to the top globe just like the water in your coffeepot. People are fascinated by it!
Hoke
Achieving Wine Immortality
11420
Sat Apr 15, 2006 1:07 am
Portland, OR
JuliaB wrote:Well, Hoke, I guess time flies when you're having fun, because I do not feel this takes any longer than any other method. Water boils at the same rate whether it's for a French press or a vacuum. I usually allow mine to perculate in the upper globe about 3 minutes. I'm surprised at the cleaning concern. The FP is, in my opinion, a bigger PITA to clean. Plus, I think the flavor of the coffee is noticeably enhanced by the vacuum method.
To each his own...you plunge and I'll vacuum!
Cheers!
JB
Hoke
Achieving Wine Immortality
11420
Sat Apr 15, 2006 1:07 am
Portland, OR
Hoke wrote:And now I'm getting the old brush off.
Jenise
FLDG Dishwasher
43595
Tue Mar 21, 2006 2:45 pm
The Pacific Northest Westest
Howie Hart wrote: where it gets reheated and recirculated, thus, overheating (and burning) the brewed coffee in the process.
Jenise wrote:Howie Hart wrote: where it gets reheated and recirculated, thus, overheating (and burning) the brewed coffee in the process.
Always attributed my early dislike of coffee to childhood tastebuds, but thinking back I'll bet this is the real reason why a lot of us grew up not liking coffee. The uncooked grounds smelled good in the can, but what came out of those percolators our parents used was a whole 'nother story.
Users browsing this forum: ClaudeBot, Google Adsense [Bot], Ripe Bot and 4 guests