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Simple Green: Cold Brew Coffee
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After biking to work on humid summer days, the last thing we wanted was a hot cup of coffee. But like most folks, we needed something to get us going in the morning. Making ice coffee the usual way (with a coffee maker or French press over ice) uses energy, requires added equipment, creates unwanted heat and even cracks the occasional pint glass! We were at a loss until last month, when a friend told us about cold brew coffee...

 
 

Cold brew coffee requires nothing more than some ground coffee grounds, an old spaghetti jar, a filter of sorts and some planning ahead. This method works great with just about any coffee and produces a wonderful flavor, without the bitterness associated with less expensive beans.

There are a few recipes online with conflicting coffee-to-water ratios, but in our experience, just about any combination of coffee and water, left over night in the fridge, seems to work! We typically put a quantity of medium-course grinds in a spaghetti jar, fill it up with water, shake, and let it sit for a couple days in the fridge. When you're ready for a cup, simply filter it through a coffee filter, or a fine strainer, dilute to taste, and enjoy over ice. We also like to try fastening some cheese cloth over the jar for an instant as-you-pour filter. If anyone tries this, let us know if it works!

For those who prefer a more precise recipe, here's one compliments of The New York Times:

1. In a jar, stir together 1/3 cup (medium-course grind is best) coffee and 1 1/2 cups water. Cover and let rest at room temperature overnight or 12 hours.
2. Strain twice through a coffee filter, a fine-mesh sieve or a sieve lined with cheesecloth. In a tall glass filled with ice, mix equal parts coffee concentrate and water, or to taste. If desired, add milk.

Related Posts:

Hot Tip: Do More With Your Coffee Grounds
AT on... The Continuing Coffee Debate
Reusable Coffee Filter vs. Paper Filter?
How To Dispose of Used Coffee Grounds and Tea Leaves?

Posted originally by Trent on 2008-07-21 - CB

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Simple Green, food and cooking, coffee, ice

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Comments (18)

Fantastic idea, I've been forgoing my morning brew more often than not due to summer heat- and find myself splurging on an iced coffee in the am way more than I can really afford to. I'll have to give this a try!

posted by stella24 on July 21st 2008 at 12:33pm
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Excellent suggestion, especially with how hot this summer has been. I should make one for work instead of constantly paying for ice coffee. Any idea on how long it would last?

posted by SadieSue on July 21st 2008 at 12:39pm
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Coffee made this way really is a lot less bitter, so you can get away with adding less sweetener to it, which is another plus. Can be pretty caffeine-heavy, though, so be careful at first. :)

posted by benfest on July 21st 2008 at 12:40pm
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Couldn't I use my french press in this way? Put the coffee grounds and water in and then stick it in the fridge overnight? I've made coffee in the morning and then stuck in the fridge to cool a bit. Then I used coffee cubes( left over coffee made into icecubes) to make it cooler. But it would be smarter to just do it the night before?-
cold coffee= yum!

posted by Jet'set on July 21st 2008 at 1:04pm
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I've just been either a) recycling what's left in the pot after making regular hot coffee, either by sticking it in fridge if there's alot, or just adding ice to the cooled down coffee(I like hot coffee stronger than cold coffee, so it works) and
b) making a pot strong, and pouting over ice like I do for iced tea.

But I'll have to try the cold filter, although it seems like you would use up more coffee this way...

posted by Rndrc on July 21st 2008 at 3:22pm
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Jet set-I just read your post; I do the same, tea ice cubes and lemonade icecubes...for those that like mint I'll stick a bit of mint leaf in the cubes as well

posted by Rndrc on July 21st 2008 at 3:24pm
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The New York Times has a great article on New Orleans iced coffee - a time honored Southern favorite!

http://www.nytimes.com/2007/05/06/style/tmagazine/06ticed.html?scp=5&sq=orleans%20coffee&st=cse

posted by Aunt Honey on July 22nd 2008 at 3:31am
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I drink a lot of coffee and typically have a mason jar of this "brewing" on my counter every 12 hrs.

posted by Ari_B on July 22nd 2008 at 5:36am
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Awesome! I've been serving iced coffee (hot poured over ice to chill it) all summer long and considered buying a toddy brewer... I held back because I thought, gee, why do you need a special piece of equipment to do that? You have provided the solution. Muchas gracias.

posted by whytephoenix on July 22nd 2008 at 5:38am
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And yes, I think the french press would work fine.

posted by whytephoenix on July 22nd 2008 at 5:39am
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I agree - the french press is a great idea for those who already have them!

And cold brew makes a nice strong mixture, with lots of caffeine as benfest said, so diluting it will make it go pretty far.

posted by ttbj on July 22nd 2008 at 6:22am
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I love making this style of coffee. It tastes great and saves me time in the morning!

posted by dct on July 22nd 2008 at 10:03am
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I tried this, using the NYT recipe after googling it, and although it was doubtful, it turned out fine. I think my coffee was old, though. I wonder how this would work with finer ground espresso type coffee... maybe I should try it.

posted by rosy on July 22nd 2008 at 4:54pm
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I love cold brew coffee and have made it at home for years to drink both iced and hot with hot water. I just found the coolest cold brew maker (no pun intended) at www.hourglasscoffee.com. This maker uses no filters and has these little Bean Kanteens which go in the refrigerator and look like they can go just about anywhere too. I can't wait to have a less messy way to make cold brewed coffee.

posted by Tammy30 on November 11th 2008 at 8:31pm
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I just found the coolest cold brew maker (no pun intended) at www.hourglasscoffee.com.
http://www.crazypurchase.com

posted by screnn on July 27th 2009 at 1:44am
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I've been doing this for a while now, and I usually brew a larger batch and store it in the fridge for multiple days. I've kept my cold-brewed coffee for up to a week without much difference in flavor, but then I'm not really a coffee snob, so it might not work for everyone.

posted by safarikate on September 28th 2009 at 1:52pm
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Don't get the hourglass thingy. It's really a waste. I bought it, thinking it would make cold brewing easier, but all it did was make more cleanup!

posted by KimberlyM on September 28th 2009 at 7:47pm
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I love how smooth cold-brew coffee is. I have started cold-brewing all coffee and just adding hot water to it when I want hot coffee. It seems to be a lot more concentrated when cold-brewed so diluting it a little turns out just right.

I use 1/4 cup of coffee in a quart jar, and I sometimes re-soak the same grounds a second time around. It's a little weaker, but still plenty dark enough if not diluted.

posted by matchbookhymnal on September 30th 2009 at 9:44pm
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