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Filtron Cold Brew Review

Over the past few years, cold brew coffee has gained popularity. Almost every cafe and coffee shop now serves a cold-brew coffee option. Cold-brew style coffee uses time instead of heat to draw out coffee's natural flavors, caffeine, and oils. Some people also favor cold brew because it has less acidity than traditionally brewed coffee for improved taste as well as for those who may have acid sensitivity.

The Filtron Cold Water Coffee Concentrate Brewer allows you to enjoy cold brew coffee in your own home. Since the brewer makes a concentrate rather than a specific type of coffee beverage, it offers greater flexibility. You can use the concentrate to make iced coffee, hot coffee, and milk-based coffee drinks.

About Filtron

Filtron is based out of Westminster, California, and focuses solely on cold brew coffee. Although cold brew has only recently gained popularity in recent years, Filtron has been in the business of cold brew since the 1970s. Their products are durable and long-lasting and make a perfect coffee concentrate for use in a variety of different coffee beverages.

What We Like Best

  • Kit includes everything you need to make coffee concentrate
  • Low Tech Brewing System
  • Durable

When you purchase the Filtron Cold Water Coffee Concentrate Brewer, you get everything you need to make a highly flavorful but low acid coffee concentrate that can form a base for all your favorite coffee beverages. The brewer comes with a coffee bowl, a water bowl, and a 1 1/2 liter decanter, a filter pad, and paper filters to get you started. The system is easy to use and requires no energy for brewing coffee concentrate.

To brew your coffee, place the filter inside the coffee bowl and pour in a pound of regular ground coffee. Level the coffee and insert the included grounds guard on top of the grounds. After you have done that, place the water bowl on top of the coffee bowl and pour in water. The water bowl has water lines marked so you can put the proper amount of water in depending on how much coffee concentrate you want to make.

Once you've poured in the water, you can walk away. Leave the coffee to brew for a minimum of 12 hours to a maximum of 24 hours. When it's finished brewing, lift out the water bowl, put the coffee bowl over the decanter, and then pull out the stopper and let it drain for 45 minutes to an hour. The decanter comes with a cap for easy storage of your coffee concentrate.

According to Filtron, the concentrate will keep for six weeks in the refrigerator or four to five weeks un-refrigerated without the flavor deteriorating. Although the initial brewing is time-consuming once done, the concentrate is convenient to use whenever you feel like a cup of coffee or coffee-based beverage.

For the best taste, use one ounce of concentrate per six ounces of hot or cold water. Filtron systems can last for decades if properly cared for, even with regular use. Some people who can't drink coffee made by the traditional methods can drink coffee made using the cold brew method.

Filtron even says it will provide your physician with a chemical analysis of the coffee made using the Filtron brewing process upon request to see if you can drink it even if you can't drink traditionally brewed coffee.

The Filtron Cold Brew coffee maker was named one of our picks for the Best Coffee Makers

What We Don't Like

  • The brewing process is very long

Although the Filtron brewing process is simple, it takes a very long time to complete. If you need coffee fast and you don't have a minimum of 12 hours to wait, this system will not work for you. Besides the initial brewing process, you also need to wait for the coffee bowl to drain into the decanter, adding another 45 minutes or more to the wait.

Also, while the idea of making your own coffee-based beverages may sound appealing, you should consider if you have the time to take the concentrate and use it to make yourself a latte or other designer drink. It might be better to get an automatic coffee or espresso maker or even a pour-over brewer that takes less time to brew.

Some people want to push a button or set a timer and have coffee ready and waiting for them in a few minutes. Unless you have specific dietary needs, it may not be necessary to go through the entire time-consuming cold brew process. While the Filtron Cold Water Coffee Concentrate Brewer is great for making cold brew, it may be easier to get a high quality drip-brew machine if you don't have to have a cold brew and just want coffee that tastes good.



The Filtron Cold Water Coffee Concentrate Brewer is great if you want to make coffee shop quality cold brew at home. It's also a possible solution if you are sensitive to the acid in traditionally brewed coffee but would still like to drink coffee. However, it takes a long time to brew, and this could be an inconvenience if you are on the go and need coffee quickly.

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