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  • How to Make Cold Brew Coffee

How to Make Cold Brew Coffee

Want to know how to make delicious cold brew coffee at home? Who doesn’t, right? Cold brew is smooth and delicious, easy to make, and stores for up to a week. If you’re looking for a good jolt of caffeine but a less acidic cup of joe, look no further. This homemade cold brew is sure to power you through your work day, or up a mountain, all year round. All you need is a couple of mason jars, no fancy machines! You can store your cold brew in the fridge for up to a week. Make a big batch and have coffee ready to go each morning!

A coffee roaster stirs coffee grounds and cold water into a mason jar to make cold brew.

What you’ll need to make cold brew coffee in a Mason jar:

  • A couple of Mason jars (32 or 64 oz)
  • Coffee filter
  • Strainer
  • Prime Roast coffee, ground coarse (#9 grind on an industrial grinder)
  • Cold filtered water

*For a 32 oz (quart) mason jar, use 4 oz (.25 lbs) of coarsely ground Prime Roast coffee.

*For a 64 oz (half gallon) mason jar, use 8 oz (.5 lb) of coarsely ground Prime Roast coffee.

Time needed: 18 hours and 5 minutes.

How to Make Cold Brew Coffee in a Mason Jar

  1. Scoop coffee into your jar.

    Put 4 oz (.25 lbs) of coarsely ground coffee into a 32 oz. Mason jar.
    Coffee grounds sit in a mason jar before cold water is added to them to make cold brew coffee.

  2. Fill jar with cold water.

    Fill mason jar halfway with cold water and stir. Fill the rest of the way with cold water.
    A coffee roaster pours cold water over coffee grounds in a mason jar to make cold brew.

  3. Let steep.

    Secure lid on jar and place in the refrigerator. Steep for 12-24 hours, depending on desired strength and preference (we’ve found that 18 hours works great.)
    Coffee grounds steep in cold water in a mason jar to make cold brew coffee.

  4. Strain the coffee.

    After the desired steep time has been reached, place a coffee filter into a strainer and strain the cold brew into a second Mason jar. The coffee grounds will soak up some of the water, leaving less liquid than what you started with. This will yield a concentrate. If you love your cold brew strong, drink it straight! Or, add cold water until desired strength is reached. We recommend adding small increments of water to find your desired taste. You can always add more, but you can’t make it stronger once it’s too weak. 
    A coffee roaster strains the cold brew coffee into another mason jar.

What type of coffee works best for making cold brew at home in a Mason jar?

Cold brew coffee is best made with coarse grounds. We recommend our Mexican Roast to make cold brew—blend our medium and dark roast and experience all the chocolatey goodness! Just select “Very Coarse (French Press, Perc, Cold brew)” as the grind type at checkout. You can also browse all of our coffees.

Emily’s Brew Guide

  • How to Brew Good Drip Coffee
  • How to Make Aeropress Coffee
  • How to Make French Press Coffee
  • How to Make Melitta Pour Over Coffee
  • How to Make Chemex Pour Over Coffee
  • How to Make Cold Brew Coffee

Our Featured Coffees

  • Costa Rican La Minita $20.00
  • Brighter Days Coffee $16.00
  • Customer's Choice Coffee Club Customer's Choice
    Rated 5.00 out of 5
    From: $14.00 every 2 months
  • Papua New Guinea Coffee
    Rated 5.00 out of 5
    $16.00
  • Mexican Coffee $15.00

Customer Love

As wonderful as always! We have been customers at Prime Roast for 14 years and have NEVER had a bad experience. Demon Roast is exceptional as are the staff!.”

Judy S.

I loved the price of my latte and was so glad to get a discount for using one of your cups! I love when companies give incentives to save the environment!”

Allison M.

Everything was perfect. On a rainy day to enter into Prime Roast where the aroma surrounds one and the service is as pleasant as always is a treat.”

Joslin F.

We are up from Tennessee and happen upon Keene. As we left our hotel this wonderful coffee smell hit us. Great place for coffee or tea. If you're in Keene, it’s a must stop.”

Kevin H

This is our favorite place in town to get coffee. Great staff, nice atmosphere, and delicious coffee. We also enjoy the coffee at home every morning that we get here. Love it.”

Melissa J

Their beans are excellent, their drinks are tasty, and the baristas are friendly and knowledgeable (we even got excellent hiking tips from ours). For us, the best place for coffee in Keene.

GRP

Emily’s Brew Guides

Pour Over Coffee Icon

Chemex

Drip Coffee Icon

Auto-Drip

French Press Coffee Icon

French Press

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Inside the Prime Roast Roastery in Keene, NH

The Roastery

Fun Facts

200-400 lbs. of coffee roasted by prime roast per day

Call: 603.352.7874

The Café

16 Main Street

Keene, NH 03431

Our Roasting Facility

660 Marlboro Road

Keene, NH 03431

 

contact@primeroastcoffee.com

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