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Best cold brew filter: which one to use and how long to filter

Many people who see a cold brew for the first time think about iced coffee. However, a cold brew should never be confused with its iced coffee sister, because it is made quite differently. If you are not yet familiar with this type of coffee and would like to know about the best cold brew filter, be sure to read on.

best cold brew filter

Best Cold Brew Filter picks

To make cold brew, you do need a little bit of knowledge. Fortunately, we have a convenient beginner’s guide that will make brewing cold brew coffee a whole lot easier.

Before you start to filter your ground coffee, you will need to obtain the right equipment. Next, we will explain each piece of equipment and how you use it to make the best cold brew coffee.

1. Toddy Cold brew Coffee System

Even a cold brew can require some specialist equipment, even though you are not obligated to obtain it in this case. However, if we can make a recommendation so you can get the perfect cold brew in minimal time, we can suggest the Toddy Cold Brew System.

Before we elaborate on the Toddy Brew System, we need to mention that a standard French Press can be used for a cold brew too. You don’t even need a French Press, as something as simple as a mason jar can help you to create large batches of cold brew in minimal time.

But let’s move back to the Toddy system and why you should get one. With a Toddy filter, you only need your coffee and your cold water, so this is one system that does not require any additional knowledge to make your new recipe. It is also one of the most reliable filter options you will find on the market, so make sure to get it if you regularly enjoy this brew.

The only real downside to the system that you may find is the length of the brewing process. The filtration can take up to 24 hours, although this is not that unusual for a brew such as this.

2. 12 x 12″ Organic Cotton Cold Brew Bag

This cold brew filter from Doppelganger Goods is brilliant. It’s basically a large cotton bag that you put your coffee grounds in. Then you immerse the bag in your mason jar or whatever vessel you’re using to brew.

The cotton makes sure that only water can cross in and out, so you’ll get a nice even extraction and the resulting cup will be incredibly clean, with virtually no grounds left.

Once you’re done brewing, just pull the bag out, use the easy nylon drawstring to open it and discard the coffee grounds. Then turn the bag inside out, rinse under water, and let it air-dry.

You can even use this with the Toddy system – instead of the Toddy filter, use this.

3. 120 pack disposable cold brew filters

If you’d prefer to avoid the cleanup process, you can opt for these. Each bag is capable of holding 100 grams of coffee grounds, which should be enough to brew about 800 ml of cold brew using the 1:8 ratio.

In case you balked at the word disposable, these filters are commercially compostable, which means you can toss them in the green bin or even compost them at home. You may need to shred them first, though.

They’re made of natural tough fibers, so you don’t need to worry about anything artificial in your coffee.

4. Tube+ Cold brew coffee filter

The last pick on our list is the Tube+ cold brew coffee filter. Made from a stainless steel mesh, the holes are fine enough to make sure only water gets through and your resulting brew is smooth and clean.

The Tube+ is rather big and is actually designed to fit inside a 64 ounce mason jar. You can obviously put it in anything else as well, provided it fits!

Because of the generous size of the Tube+ cold brew filter, you can fit up to 200 grams of coffee grounds, which is enough for 1.6 liters of cold brew using the 1:8 ratio.

What Is Cold Brew?

A cold brew is made by leaving coffee grounds in water up to 24 hours. The result is a concentrated coffee essential, which is further diluted and then served cold.

While you might believe this would create quite the bitter taste, the opposite is actually true. This kind of brew coffee is known for its mellow taste. In fact, coffee lovers describe this one as sweeter than Americano and regular filter coffee.

A cold brew coffee allows you to fully appreciate the full taste of coffee beans, as hot coffee does not always do coffee beans justice. Evidently, this means that this particular coffee is quite popular among coffee bean aficionados.

How Long Should Cold Brew Sit?

The answer to this question may vary depending on the method you use. Most coffee machine manufacturers can provide you with exact times for their appliance on their website, so let’s focus on the more unusual tools that are used for this kind of coffee.

French Press

If you decide to use a press for this, stick with the recipe mentioned above to star. Add the grounds to the bottom of the press and then slowly add the water. Make sure you stir gently. Cover the press, but be careful not to plunge. Leave it for approximately 12 hours and then press the plunger down.


It is possible to make your favorite brew with a sieve. That being said, it does require a few extra supplies and a little ingenuity.

First, grab a glass pitcher and add your preferred coffee grounds to the bottom of the pitcher. Add the water and stir the mixture gently. Once done, you can cover the pitcher with something like cheese cloth and use a rubber band to stop it from coming loose.

If you use a sieve, we recommend leaving the mixture for at least fifteen hours before you strain the mixture into a different pitcher. We also suggest doing a second strain with a coffee filter in the sieve.

Once your brew is done, you can add some additional things such as ice, milk, or some additional water according to your preference.

Coffee Bean Grinding

Whether you use paper coffee filters or a portafilter in a coffee maker, creating a good cold brew requires you to grind your coffee beans first. Nowadays, you can get electric as well as manual coffee grinders. The best grinder for coarse grinds is usually a stainless steel electric grinder. If you are looking for the best grinder for finer grounds, we suggest a ceramic burr.

Why Should I Make This At Home?

If you have a love for the colder version of coffee, you may have found that it can be extremely expensive. If you can make them at home, it can save you heaps of money in the long run. Fortunately, the guide we provided you with today can help you get started on this task. We are sure you will be a star barista in no time at all!

Frequently Asked Questions

What Is The Best Ratio For Cold Brew Coffee?

The ideal ratio for this brew is 1:8 or less. That means you add 100 grams of coffee to 800 ml of water. In time, you can experiment with the quantities a little, but it is more than worth starting with the standard ratio.

How do you filter cold brew?

The best way to filter cold brew is using some kind of fabric like the pouches we’ve listed above. You can also use a paper filter and a funnel.

Why is cold brew so expensive?

Cold brew is expensive because it takes up to 24 hours to brew, and requires a lot more coffee grounds for a single serving than hot coffee.

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

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About Shabbir

Shabbir is the Chief Caffeine Officer at Coffee In My Veins. When he's not weighing out coffee beans for his next brew, you can find him writing about his passion: coffee.