There’s nothing better than cold brewed coffee on a hot summer day – or if you’re like us, any day, really. Cold Brew coffee is naturally smooth and sweet and less acidic than coffee brewed with hot water. The Filtron Cold Water Brewer is a simple way to make several cups of cold brew concentrate. Cold brewing takes between 12 – 24 hours (we recommend 16) but the payoff is huge. This batch should keep you buzzing for days. We recommend a ratio of 1:2 coffee concentrate to water over ice, adjusting to taste.

Bean to cup 960 Minutes

What you need

Step 1

Insert stopper

Take the rubber stopper and plug the hole at the bottom of the coffee bowl.

Step 2

Place rinsed filter

Take the Filtron pad and fit it snugly in the bottom of the coffee bowl. It should be domed up in the center when it’s in place correctly. If you are using it for the first time, give it a good rinse. When not using the pad, be sure to store it in cold water in the fridge.

Step 3

Add ground coffee

Measure 12 ounces or ¾ lb of coffee. Your coffee should be ground coarsely to about the consistency of breadcrumbs. Pour it directly into the coffee bowl and give it a shake to even out the coffee bed.

Step 4

Place coffee guard

Place the coffee guard right on top of the coffee grounds. This will help the water distribute evenly and keep the coffee bed flat during brewing.

Step 5

Add water to bowl

Add 56 ounces of cold water for 12 ounces (¾ lb) of coffee. Fill to the the ¾ lb line inside the Filtron water bowl. If you’re filling it over the sink, cover the hole at the bottom with your finger so the water doesn’t drain out. Or, just add water directly to the water bowl.

Step 6

Let it brew

After you pour the water in, let it brew for 12 to 24 hours. We recommend 16. Store it in your refrigerator.

Step 7

Decant cold brew

After 16 hours, the concentrate should be ready. Use the handle of the coffee bowl and lift it above the empty 1 1/2 liter decanter. Pull out the stopper slowly over the decanter and set it on top to drain. This should take about 30 to 45 minutes and will make several cups of concentrate.

Step 8

Serve and enjoy

Pour over ice. We suggest a ratio that’s one part concentrate to two parts water. Adjust to your taste. The concentrate will keep in your refrigerator for about 10 days. Beware! Cold Brew coffee goes down smooth and easy, but packs a potent punch. Sip slowly, or add lots of ice, water, or milk to keep you from flying too close to the sun.


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