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Netphilosopher
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Posted Mon Jun 13, 2011, 12:32pm
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soberchef
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soberchef
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Posted Wed Jun 22, 2011, 6:51am
Subject: Re: Cold Brew Coffee Experiments (or puttering around)
 

Really good info. Thanks!!
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Netphilosopher
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Posted Mon Jun 27, 2011, 10:25am
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earth2ella
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Posted Wed Aug 10, 2011, 12:41pm
Subject: Re: Cold Brew Coffee Experiments (or puttering around)
 

hey!
i love your experiment here but quite honestly i'm a little lost...any chance you might be able to break it down for me?
would love to know what you recommend... how many ounces of coffee with how much water and how long you suggest i let it soak for?
you'd be doing me a huge favor :)
thanks ~ella
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Netphilosopher
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Posted Wed Aug 10, 2011, 2:31pm
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jpender
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jpender
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Grinder: OE LIDO
Vac Pot: S/S Moka Pot
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Posted Wed Aug 10, 2011, 3:40pm
Subject: Re: Cold Brew Coffee Experiments (or puttering around)
 

Netphilosopher Said:

it will be coffee concentrate.

Posted August 10, 2011 link

Do you know if it is feasible to concentrate it further? I don't mean by starting with a  higher brew ratio (which you found to be a bad idea), but through freeze concentration?
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Netphilosopher
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Posted Thu Aug 11, 2011, 8:02am
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jpender
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jpender
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Posted Thu Aug 11, 2011, 11:44am
Subject: Re: Cold Brew Coffee Experiments (or puttering around)
 

Netphilosopher Said:

Now, you COULD hot charge and cool the brew overnight.  I have not tried this FULLY, but I essentially do this most nights for quick coffee in the morning (brew 4%-5% strength coffee concentrate with an Aeropress, cover and refrigerate overnight, reconstitute in the morning with piping hot water) except I don't leave the brew in contact overnight.  This gives me top-notch coffee in the morning with the speed of a single-cup brewer.

Posted August 11, 2011 link

So you sometimes hot brew the night before? I would have thought that you'd lose aromatics that way, unless you could cool the coffee very quickly. This is the reason I was interested in cold brewing in order to make a concentrate. But if there is no appreciable loss in flavor then cold brewing provides no advantage for what I am interested in (and this is the wrong thread).

I have never tried repeatedly freezing coffee in order to concentrate it so I don't have a feel for how far this could be pushed. Is a 50% concentrate achievable?
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Netphilosopher
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Posted Thu Aug 11, 2011, 12:08pm
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jpender
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jpender
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Location: California
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Posted Thu Aug 11, 2011, 1:34pm
Subject: Re: Cold Brew Coffee Experiments (or puttering around)
 

Netphilosopher Said:

(I'm basing this on past evaporation checks that I do to check extraction and total dissolved solids.  If I reconstitute evaporated solids, I get something coffee-like but very weird and flat flavor profile.  It almost tastes like... well if you had it you wouldn't call it coffee right off.  Tastes boiled?  Like half of the flavor profile is missing?  Off?  Not exactly spoiled...  you'll have to try it yourself.  Just take a cup of coffee, and put it in the oven at 215F until all of the water evaporates.  Then, put the amount of water that evaporated back in and stir to re-dissolve the solids, and taste it. :D   You prolly won't thank me that you did... ;-) )

Posted August 11, 2011 link

I can believe that. But hot evaporation of a liquid composed of many different volatiles isn't going to produce the same end product as freeze concentration will.

I guess I'll brew up a sample (hot) and then freeze it just to see what it looks like. I'm not sure I've ever seen frozen coffee before.
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