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Chemex Timing Questions
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Discussions > Coffee > Machines > Chemex Timing...  
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mlim18
Senior Member


Joined: 21 Oct 2012
Posts: 11
Location: CA
Expertise: I love coffee

Espresso: Crossland CC1
Grinder: Baratza Preciso
Drip: Chemex
Posted Sat Nov 3, 2012, 11:12am
Subject: Chemex Timing Questions
 

Hi All,

I just recently got a Chemex and had a couple timing questions.

I know that 3.5 to 4 minute brew times are optimal.  Does this time though include the 30-45secs for the bloom or should I start my timer after I allow it to bloom?

Also, I typically brew less than 20oz at a time.  I usually brew 12-16oz a time.  Should I be shooting for a shorter brew time because I am brewing less coffee or should I grind my coffee a bit finer? Also, vice-versa, should I aim for longer brew time for more coffee, say 30oz, or should I adjust my grind to a coarser setting in order to brew within the 3.5-4min range.

thanks for the help!
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mlim18
Senior Member


Joined: 21 Oct 2012
Posts: 11
Location: CA
Expertise: I love coffee

Espresso: Crossland CC1
Grinder: Baratza Preciso
Drip: Chemex
Posted Sat Nov 3, 2012, 11:21am
Subject: Re: Chemex Timing Questions
 

Also, another question I just thought of:

How quickly should I aim to finish pouring out my dose of water?  Should I aim to finish pouring as closely to the 3.5-4 minute mark, allowing just enough time for all of the water to pass through the coffee?
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oldgearhead
Senior Member
oldgearhead
Joined: 25 Jan 2010
Posts: 396
Location: Go Colts!
Expertise: I like coffee

Grinder: Virtuoso by Baratza
Drip: Chemex,Dilongi DCM900
Roaster: 1/2K Fluid-bed
Posted Sun Nov 4, 2012, 5:18am
Subject: Re: Chemex Timing Questions
 

Of course it depends on how much water you pour through it. I usually see about 7 minutes for 40 ounces.
I think the Chemex filter does most the flow control, because water + coffee time is only slightly longer than water only. I wouldn't count the bloom, but then I would never time a brew either..
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jaybar
Senior Member


Joined: 13 Sep 2011
Posts: 173
Location: Brooklyn
Expertise: Just starting

Posted Mon Nov 5, 2012, 8:13am
Subject: Re: Chemex Timing Questions
 

Hi

I ask many of the same questions. Hope there are more responses.

Jay
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johnnyb3
Senior Member


Joined: 29 Mar 2010
Posts: 187
Location: Anaheim, CA
Expertise: I love coffee

Grinder: Baratza Maestro Plus refurb
Vac Pot: Bodum Santos
Drip: Chemex
Posted Tue Nov 6, 2012, 4:30pm
Subject: Re: Chemex Timing Questions
 

oldgearhead Said:

Of course it depends on how much water you pour through it. I usually see about 7 minutes for 40 ounces.
I think the Chemex filter does most the flow control, because water + coffee time is only slightly longer than water only. I wouldn't count the bloom, but then I would never time a brew either..

Posted November 4, 2012 link

I think that estimate is just about correct. I have begun adopting the following procedure, which works pretty well over a wide range of batch sizes (16-32 oz).

Bloom as usual. After the bloom, start timing. Pour for 3 minutes and 15 seconds, keeping the pour low and slow. (I'm shooting for 3:30 total including about a 15-second drawdown.) However much water has made it through in that time, stop pouring. Let the water drain from the filter and get rid of the filter. Then top off your brew to the desired weight (based of course on the amount of coffee you started with) pouring water straight into the Chemex.

This really helped with my problem of overextracting, and I can now really bring out the varietal flavors.
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unclebigcats
Senior Member


Joined: 21 Nov 2012
Posts: 1
Location: Bakersfield, CA
Expertise: I love coffee

Grinder: Cuisinart
Drip: Chemex
Posted Wed Nov 21, 2012, 12:35pm
Subject: Re: Chemex Timing Questions
 

johnnyb3 Said:

I think that estimate is just about correct. I have begun adopting the following procedure, which works pretty well over a wide range of batch sizes (16-32 oz).

Bloom as usual. After the bloom, start timing. Pour for 3 minutes and 15 seconds, keeping the pour low and slow. (I'm shooting for 3:30 total including about a 15-second drawdown.) However much water has made it through in that time, stop pouring. Let the water drain from the filter and get rid of the filter. Then top off your brew to the desired weight (based of course on the amount of coffee you started with) pouring water straight into the Chemex.

This really helped with my problem of overextracting, and I can now really bring out the varietal flavors.

Posted November 6, 2012 link

THANK YOU!!! New to pour-over brewing, starting with a 10 cup Chemex. I tried your suggestion and what an improvement!! Trying to be consistent and adjusting one variable at a time.  I've been over-extracting (up to 7:00+ minutes)  for 24 oz./40 g .  Think my grind has been too fine so I adjusted slightly  and this helped shorten. Was left with just a small amount of water which I added. Great improvement!
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johnnyb3
Senior Member


Joined: 29 Mar 2010
Posts: 187
Location: Anaheim, CA
Expertise: I love coffee

Grinder: Baratza Maestro Plus refurb
Vac Pot: Bodum Santos
Drip: Chemex
Posted Fri Nov 23, 2012, 4:05pm
Subject: Re: Chemex Timing Questions
 

unclebigcats Said:

THANK YOU!!! New to pour-over brewing, starting with a 10 cup Chemex. I tried your suggestion and what an improvement!! Trying to be consistent and adjusting one variable at a time.  I've been over-extracting (up to 7:00+ minutes)  for 24 oz./40 g .  Think my grind has been too fine so I adjusted slightly  and this helped shorten. Was left with just a small amount of water which I added. Great improvement!

Posted November 21, 2012 link

Glad I could help! I found the difference to be day-and-night.
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