French press extraction going south

press, drip, syphon, clover

French press extraction going south

Postby PatrickSmith on Tue Oct 13, 2009 6:35 am

I have been brewing quite a bit with my french press recently. Weighing coffee, weighing water, etc. in an attempt to be as precise as possible. I've also been employing the James Hoffman "scoop before press" method (I think someone predated James in this, but I learned about it on jimseven.com--apologies to the originator). The resulting extractions have been really nice.

However, I have noticed that after about 10 minutes the extraction seems to go south. Nuances break down, and the flavor generally becomes unpleasant (scientifically speaking). I began pouring the coffee off into another container to ensure no passive extraction post plunge. With traditional drip brews, I am usually good for 35 minutes before I start noticing significant decline.

Has anyone else noticed this? Is it owing to fines working through the screen and continuing to extract? Any other theories?
PatrickSmith
 
Posts: 15
Joined: Thu Oct 01, 2009 6:22 am
Location: Fort Wayne, IN
full name: Patrick Smith
company: UTOPIAN Coffee
: utopiancoffee.com

Re: French press extraction going south

Postby nick on Tue Oct 13, 2009 7:12 am

PatrickSmith wrote:(I think someone predated James in this, but I learned about it on jimseven.com--apologies to the originator)

Tim Wendelboe

PatrickSmith wrote:Has anyone else noticed this? Is it owing to fines working through the screen and continuing to extract? Any other theories?

No, it's not that at all. Don't be silly!
What it really is are fines working through the screen and continuing to extract.
:wink:
Nick Cho
nick
 
Posts: 1335
Joined: Thu Jun 23, 2005 8:15 pm
Location: San Francisco, Coffeefornia
full name: Nicholas Cho
company: Wrecking Ball Coffee Roasters
: http://nickcho.com
: http://wreckingballcoffee.com/

Re: French press extraction going south

Postby Ric Rhinehart on Wed Oct 14, 2009 5:20 am

For an interesting look at what you are up against here, brew a french press and plunge and then pour the resulting brew through a paper filter - a cone is probably the best demonstration. Wait the required thirty minutes and check it out. For a really enlightening experience measure the solids yield with a tds meter or refractometer after filtration.
Ric Rhinehart
 
Posts: 95
Joined: Mon Dec 05, 2005 11:23 pm
Location: Long Beach

Re: French press extraction going south

Postby Andre Vornbrock on Mon Oct 19, 2009 9:53 pm

There was an interesting post over on HB on a related note to this topic.
Andre Vornbrock
 
Posts: 10
Joined: Sun Oct 18, 2009 10:07 pm
full name: Andre Vornbrock
company: EspressoForge
: http://www.espressoforge.com


Who is online

Users browsing this forum: Bing [Bot] and 1 guest

cron