Easy Mason Jar Cold Brew Coffee Recipe: Smooth & Delicious!
Bring the rich, smooth flavor of cafe-quality cold brew right into your home with our easy-to-follow guide on making cold brew coffee in a mason jar. Forget the long lines at the coffee shop and say hello to a refreshing, homemade experience that’s both simple and satisfying. This method delivers a less acidic and more flavorful coffee concentrate perfect for any time of day.
Dive into the world of chilled coffee perfection with ease and enjoy every delightful, revitalizing sip. Learn how to harness the power of slow brewing to create a coffee that’s naturally sweet and incredibly smooth.

Cold brew is more than just a morning beverage; it’s a versatile ingredient and a delightful treat any time you crave it. The slow steeping process extracts unique floral notes and a naturally sweet taste that’s a welcome departure from the often bitter taste of hot-brewed coffee. With its inherently low acidity, cold brew is also gentler on your stomach, allowing you to enjoy your caffeine fix without discomfort.
But the possibilities don’t stop there! Cold brew isn’t just for sipping straight; it’s a fantastic secret ingredient in a variety of creative concoctions. Imagine crafting your own Black or White Russians with a coffee kick, or blending up creamy, indulgent milkshakes that satisfy your sweet tooth in a whole new way. The possibilities are truly endless.
If we’ve piqued your interest in cold brew and you’re ready to embark on a delicious journey, let’s dive in and explore the satisfying world of cold brew together. Trust us, once you taste the difference, you won’t look back!
Essential Ingredients for Mason Jar Cold Brew
To make the perfect cold brew in a mason jar, you’ll only need a few simple ingredients. Quality is key here, so opt for the best you can find.
- Water (800 ml / 27.05 fl oz) – Cold, filtered water is crucial for a clean, pure taste. Avoid tap water, which can contain impurities that affect the coffee’s flavor.
- Coffee Beans (80 g / 2.82 oz) – Coarse ground coffee is ideal for cold brew. The coarse grind prevents over-extraction, which can lead to a bitter taste.
- If you use the Comandante Grinder, set it between 35 and 40 clicks (70-80 red clix) for the perfect coarse grind.
Step-by-Step: How To Make Cold Brew Coffee in a Mason Jar
Making cold brew at home is surprisingly easy. All you need is a mason jar, some time, and a little patience. Follow these steps to enjoy a smooth and refreshing cold brew.
Step 1: Prepare your water and coffee. Filter the water to remove any impurities. Grind your coffee beans to a coarse consistency, similar to that used for a French press. A burr grinder is highly recommended for a consistent grind size.
Step 2: Set up your cold brew jar. Place a coffee filter inside a sieve or directly into the mason jar. Gently add the coarse ground coffee to the filter. Slowly pour in the filtered water, ensuring all the coffee grounds are saturated.



Step 3: Steep and chill. Seal the mason jar tightly with a lid. Place the jar in the refrigerator and let it steep for 6 to 12 hours, or even longer for a stronger brew. Experiment with different steeping times to find your preferred strength.

Step 4: Filter out the grounds. After steeping, carefully remove the filter filled with the wet coffee grounds from the mason jar. Allow the filter to drain briefly over the jar to extract as much of the cold brew concentrate as possible before discarding the grounds.

Step 5: Pour and savor. Transfer your freshly brewed cold brew concentrate into a glass filled with ice cubes. Dilute with water or milk to your desired strength. Add sweeteners or flavorings as needed, and enjoy the smooth, delicious, and invigorating experience of your homemade cold brew.


Essential Barista Tips for Perfect Cold Brew
Here are some pro tips to take your cold brew to the next level:
- Use Filtered Water: Always use filtered water when brewing coffee. Unfiltered water can calcify your brewing equipment and impart an unpleasant taste to your coffee.
- Experiment with Ratios: There’s no one-size-fits-all ratio for cold brew, but a typical recommendation ranges from 1:6 to 1:10 (coffee to water). Start with a 1:8 ratio and adjust to your liking.
- Grind Coarsely: For optimal extraction and to prevent over-extraction, use a coarser grind than you would for a French press. Grind your coffee just before brewing to preserve its aroma and flavor. If you’re using a Comandante grinder, set it between 35-40 clicks (70-80 red clicks).
Recommended Products for Your Cold Brew Journey
Here are some products that will enhance your cold brew making experience:
- High-Quality Water Filter: Ensure your water is pure and free from impurities.
- Dedicated Cold Brew Jar: Specifically designed for cold brewing, these jars often include built-in filters and easy-pour spouts.
- Acaia Pearl Scale – $150.00 from: Intelligentsia Coffee, Inc.: Precise measurements are key to consistent results.
- Coffee Grinder: A burr grinder provides a consistent grind size, crucial for optimal extraction.
Comandante Grinder in American Cherry – $360.00
from: Intelligentsia Coffee, Inc.
Frequently Asked Questions About Making Cold Brew in a Jar
Here are some common questions about making cold brew at home:
For optimal quality, enjoy your cold brew within 7 to 10 days of brewing. Store it in an airtight container in the refrigerator to preserve its freshness and flavor.
Yes, cold brew coffee can spoil if not stored correctly. It can develop off-flavors and lose its freshness if exposed to air or left unrefrigerated for extended periods. Always store it properly to maintain its quality.

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📖 Recipe

Cold Brew Coffee in a Mason Jar
Nora