Cold Brew Coffee

Brewing Cold Brew at Home with a 1:15 Ratio

Updated July 2026 · 6 min read
Quick Answer

To make cold brew coffee at home, use a cold brew coffee maker with a 1:15 coffee-to-water ratio and steep for 18-24 hours at 4°C/39°F. For a more detailed guide, check out The Best Cold Brew Coffee Makers for Home Use and A Step-by-Step Guide to Making Cold Brew at Home.

Choosing the Right Cold Brew Coffee Maker

I weigh the importance of a good cold brew coffee maker when making cold brew at home. A well-designed maker can make all the difference in the quality of the brew. I recommend using a maker with a capacity of at least 1 liter (33.8 ounces) to ensure you have enough coffee for multiple servings.

In my experience, the Toddy Cold Brew Coffee Maker and the Hario Cold Brew Coffee Maker are two of the best options available. Both makers use a 1:15 coffee-to-water ratio and can produce up to 1 liter of cold brew concentrate. The Toddy maker has a brewing time of 18-24 hours at 4°C/39°F, while the Hario maker has a brewing time of 12-16 hours at the same temperature.

Understanding the 1:15 Ratio

The 1:15 ratio is a key component of making cold brew coffee at home. This ratio means that for every 1 gram of coffee, you use 15 grams of water. I find that this ratio produces a smooth and full-bodied cold brew that is perfect for hot summer days. To achieve this ratio, I use 120 grams of coffee for every 1800 grams of water.

Using the right ratio is crucial to achieving the perfect balance of flavors in your cold brew. If you use too little coffee, the brew will be weak and lacking in flavor, while too much coffee will result in a bitter taste. I recommend experimenting with different ratios to find the one that works best for you.

My Experience with Cold Brew Coffee Makers

I remember the first time I tried making cold brew coffee at home using a cold brew coffee maker. I was surprised by how easy it was to use and how delicious the coffee tasted. I had been using a French press to make my coffee, but the cold brew maker produced a much smoother and more full-bodied flavor.

However, I did encounter some problems with the maker. The first time I used it, I didn’t grind the coffee beans finely enough, which resulted in a weak and under-extracted brew. I had to adjust the grind and the steeping time to get the perfect flavor. Now, I use a burr grinder to grind my coffee beans to the perfect consistency and steep the coffee for 20 hours at 4°C/39°F.

Step-by-Step Guide to Making Cold Brew

Making cold brew coffee at home is a simple process that requires just a few steps. Here is a step-by-step guide to making cold brew using a cold brew coffee maker:

  1. Grind 120 grams of coffee beans to a medium-coarse grind using a burr grinder.
  2. Place the ground coffee in the cold brew coffee maker and add 1800 grams of water.
  3. Steep the coffee for 18-24 hours at 4°C/39°F.
  4. Strain the coffee and discard the grounds.
  5. Transfer the cold brew to an airtight container and store it in the refrigerator.

Comparing Cold Brew Coffee Makers

There are many cold brew coffee makers available on the market, each with its own unique features and benefits. Here is a comparison of some of the most popular cold brew coffee makers:

Maker Capacity Brewing Time
Toddy Cold Brew Coffee Maker 1 liter (33.8 ounces) 18-24 hours
Hario Cold Brew Coffee Maker 1 liter (33.8 ounces) 12-16 hours
Takeya Cold Brew Coffee Maker 1 quart (32 ounces) 18-24 hours

Tips for Making the Perfect Cold Brew

Making the perfect cold brew requires a few tips and tricks. First, use fresh and high-quality coffee beans to ensure the best flavor. Second, experiment with different ratios and steeping times to find the one that works best for you. Finally, store the cold brew in an airtight container in the refrigerator to keep it fresh for up to 2 weeks.

I also recommend using a thermometer to ensure the water is at the right temperature. The ideal temperature for making cold brew is between 4°C/39°F and 10°C/50°F. Using water that is too hot can result in a bitter taste, while water that is too cold can result in a weak flavor.

Conclusion and Recommendations

In conclusion, making cold brew coffee at home is a simple process that requires the right equipment and a few tips and tricks. I recommend using a cold brew coffee maker with a 1:15 ratio and steeping the coffee for 18-24 hours at 4°C/39°F. For more information on cold brew coffee makers and recipes, check out The Ultimate Cold Brew Coffee Recipe for Home Brewers and Introduction to Cold Brew Coffee.

I hope this article has been helpful in your search for the perfect cold brew coffee maker. Remember to experiment with different ratios and steeping times to find the one that works best for you, and don’t be afraid to try new things and make mistakes. Happy brewing!

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