Discover the secret to bringing that beloved cafe-quality cold brew flavor right to your kitchen with this handy guide to making cold brew coffee in a mason jar. Say goodbye to long coffee shop queues and hello to smooth, sippable homemade goodness.
Dive into the world of chilled perfection with ease and enjoy every refreshing sip.

Let's rave about Cold Brew some more, shall we? Cold brew is smooth, soothing, and full of surprises. It has floral notes, a pleasant taste, and low acidity that won't upset your stomach.
But cold brew is not just for the morning. No, it's the secret ingredient in cocktails such as homemade Black and White Russians! I also like to use it in creamy shakes, which will satisfy your sweet tooth like never before.
So, if I've whetted your appetite for cold brew and you're ready, let's get started and explore the delicious world of cold brew together. Believe me, you won't regret it.
Ingredients you need
- Water (800 ml / 27.05 fl oz) - cold, filtered
- Coffee beans (80 g / 2.82 oz ) - coarse ground.
- If you use the Comandante Grinder, set it between 35 and 40 clicks. (70-80 red clix).
How To Make Cold Brew Coffee in a Mason Jar
Step 1: Prep your water and coffee. Filter the water and grind your coffee to a coarse consistency.
Step 2: Set up your cold brew jar. Add the ground coffee to a filter inside the jar, then pour in the filtered water.



Step 3: Steep and chill. Seal the jar and let it steep in the fridge for 6 to 12 hours.

Step 4: Filter out the grounds. Remove the filter filled with wet coffee from the jar, allowing it to drain briefly before discarding.

Step 5: Pour and savor. Transfer your freshly brewed cold brew into a glass filled with cubed ice, and enjoy the smooth, flavorful goodness.


Barista Tips
- When brewing coffee, always use filtered water. Unfiltered water can calcify your brewing equipment and give your favorite coffee a funky taste. So opt for filtered whenever possible.
- There isn't a fixed ratio for cold brew, but a typical recommendation falls between 1 to 6 and 1 to 10.
- For optimal extraction, adjust the grind coarser as the brewing time extends. Cold brew requires an even coarser grind than French press to prevent over-extraction. Grind coffee just before brewing to preserve its aroma and flavor. For a Comandante grinder, set it between 35-40 clicks (70-80 red clicks).
Products
- Water filter
- Cold brew jar
- Acaia Pearl Scale - $150.00
from: Intelligentsia Coffee, Inc. - Coffee grinder

Comandante Grinder in American Cherry - $360.00
from: Intelligentsia Coffee, Inc.
Frequently Asked Questions About Cold Brew in a Jar
For optimal quality, it's recommended to enjoy cold brew within 7 to 10 days of brewing. Store it in an airtight container in the refrigerator to preserve its freshness.
Yes, cold brew coffee can spoil if not stored correctly. It can develop off flavors and lose freshness if exposed to air or left unrefrigerated for too long.

More Recipes and Tips You Might Enjoy:
- French Press Cold Brew
- Gifts for Cold Brew Lovers
- Are Coffee Beans Cheaper than Ground Coffee?
- Cold Brew Ratio Guide
- Cold Brew Black Russian
- Cold Brew White Russian
- Cold Brew Gin Tonic
- Cold Brew Tonic
- Ginger Cold Brew
- Chocolate Iced Coffee with Cold Brew
- Strawberry Iced Coffee with Cold Brew
- Vanilla Sweet Cream Cold Brew
- Iced Irish Coffee
- Mocha Martini
- How to Sweeten Cold Brew Coffee
- Eggnog and Kahlúa Cocktail for Two
- Iced Latte Caramel with Homemade Caramel Milk
- Iced Coffee with Milk
- Iced Eggnog Latte
- Pumpkin Cream Cold Brew
- Iced Lavender Latte
- Iced Honey Latte
- How to Froth Milk without a Frother?

now available!
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Brewing Coffee for Milk Drinks
How to adapt your favorite brews for milk & creamers - without an espresso machine!
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📖 Recipe

Cold Brew Coffee in a Mason Jar
Equipment
- Water filter
- Cold brew jar
- Coffee scale
Ingredients
- 3⅓ cups Cold water filtered
- 16 tablespoon Coffee beans coarse ground
Instructions
- Filter 3⅓ cups Cold water.3⅓ cups Cold water
- Weigh 16 tablespoon Coffee beans and grind (coarse ground).16 tablespoon Coffee beans
- Place the cold brew jar on your coffee scale.
- Add the ground coffee to the filter inserted in the mason jar and tare.
- Pour in the filtered water.
- Close the jar and place it into the fridge.
- Let it steep between 6 and 12 hours.
- Unscrew the lid and remove the filter filled with wet coffee from the jar.
- Allow it to drain briefly before removing it completely from the Mason jar to avoid discarding too much cold brew.
- Pour into a glass and enjoy.
Nutrition values are estimates only, using online calculators. Please verify using your own data.











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