Making Cold Brew with a Mason Jar

How to Make Cold Brew Coffee with a Mason Jar

Mason jars have been around for a long time and the many ways that they are used never seems to end. Therefore making cold brew in a mason jar is just another way to make this tasty non acidic coffee drink.

So how do you make cold brew coffee in a mason jar? Use coarsely ground fresh roasted coffee. Use a coffee filter or cheese cloth to filter the coffee into a mason. Pour room temperature water over the coffee and allow it to flow into the mason jar. Let the coffee brew for 12 -24 hours then strain and cut with water or milk.

Sound easy? Lets take a closer look why you would want to drink cold brew and how to make it.

Benefits of Drinking Cold Brew Coffee

There are quite a few reasons to drink cold brew but the most common ones is due to the low acidity of the coffee due to the the brewing process. Since you are not using heat the acidity levels of the coffee remain very alow and if you use a coffee that is not very acidic to begin with, for example a coffee from Brazil, there will not be much acidity at all.

Another reason is due to the high caffeine content. Due to the concentrated nature of the way the coffee is brewed the caffeine content is higher then a standard cup of coffee and part of the reason that you need to cut cold brew with either water, milk or milk substitute.

Lastly, when you make a batch of cold brew it will last up to weeks in your refrigerator ( as long as you don’t add milk or creamer to it) so you can always have some coffee whenever you are in the mood.

How to Make Cold Brew Coffee in a Mason Jar

Once you have watched the video and or read these instructions you will not believe how easy it is to make cold brew.

You may have thought that its this super complicated process that only the pros can do well but if you use good coffee ( I like either a Ethiopia or Kenya) and follow these simple steps you will soon be making cold brew for all your friends and family.

Essentials

  • Fresh Roasted coffee beans ( use a 1:7 coffee to water ratio)
  • Water to make concentrate
  • Water to combine with concentrate
  • Scale
  • A Burr Coffee Grinder
  • A large mason jar
  • A mesh strainer
  • A thin coffee filter OR cheesecloth
  • A Mason Jar

Step by Step Guide

Cold Brew Coffee

1. Using the ratio mentioned above weigh out as much coffee as you need. I will use 84 grams for this example.

2. With the burr grinder, coarsely grind your coffee beans

3. Using the ratio of 1g of coffee to 7g of water ( you can use 1:5 if you want stronger cold brew) pour in 588g of water into the mason jar and give it one or 2 gentle stirs to make sure the coffee grounds are saturated with the water.

4. Close the lid and let it sit anywhere between 12-24 hours. I like 14 hours but its a personal preference. Just know the longer you let it sit the stronger it becomes and vice versa. Don’t put i t in the refrigerator.. just let it sit on the counter top

5. Once the brew time is up, grab your strainer (if its a paper one, wash it before hand) and put it on top of another Mason jar or wherever you want to pour your cold brew into.

6. I usually strain the cold brew twice so I clean out the first jar really well than put another filter on top of that and strain the coffee 1 more time just to make sure all the grinds are out. Not a necessity but a preference.

7. What you will have left in the jar in your cold brew concentrate, which, when you want to have a cup, in addition to ice, you will want to dilute with either water or milk. I suggest a 1 to 1 ratio but again that is my preference.

Last Thoughts

As you can see you really don’t need to get any of the cold brew specific brewing machines, although they can make it slightly easier to use and to clean up

For an in-depth discussion on what what proper grind size looks like you can check out this article, but in short, the grounds should be about the size of peppercorns.

The recipe above uses a mason jar to soak your grounds, but if you aren’t feeling the mason jar (perhaps they feel too “trendy” to you), there are many alternative options. Really, you only need a container that can hold as much water and grounds as is desired for your batch.

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