Miles SinclairBy Miles Sinclair

Updated November 2026

Yes, you can make cold brew with a French press. You steep coarsely ground coffee in cold water for 12 to 18 hours, then press the grounds down and pour off a concentrate that stays smooth and low in acidity. The whole process takes only a few minutes of hands-on work, and most of the time is spent waiting in the fridge.

What You Need Before You Start

A French press cold brew works best with a few basics on hand. Gather these items before you measure anything:

Shopping for one? See our guide: Cold Brew Coffee French Press: 7 Best Picks Compared (2026).

  • A French press with a glass or stainless steel carafe, sized for the batch you want
  • Coarsely ground coffee, roughly the texture of sea salt or raw sugar
  • Cold, filtered water
  • A kitchen scale and a spoon or stirrer
  • A refrigerator with enough shelf space for the carafe

Step-by-Step: Brewing Cold Brew in a French Press

Use a 1:8 ratio as your starting point. That means 1 part coffee to 8 parts water by weight, so 100 grams of coffee pairs with 800 grams of water. Add the grounds to the carafe first, then pour the cold water over them.

  1. Weigh the coffee and water. Measure by weight for consistent results.
  2. Stir gently until every ground is saturated. Dry clumps floating on top will brew unevenly.
  3. Place the plunger on top with the filter pulled up, but do not press yet. Cover the carafe with a lid or plate.
  4. Refrigerate for 12 to 18 hours. Shorter steeps taste thin; longer steeps can taste harsh or woody.
  5. Press the plunger slowly to the bottom. Pour the concentrate into a clean jar.

Choosing the Right Grind and Ratio

Grind size matters more than most people expect. A coarse grind lets water move through the coffee without leaving a sludge of fine particles that slip past the mesh. If your grounds look powdery, the filter will clog and the concentrate will be cloudy and bitter.

The ratio controls strength. A 1:8 ratio makes a concentrate you dilute before drinking. If you want a drink ready to pour over ice, start closer to 1:12 or 1:15 and skip the dilution step. Here is a quick reference:

Goal Coffee Water Dilution
Concentrate 100 g 800 g 1 part concentrate to 1 part water or milk
Ready to drink 100 g 1,200 to 1,500 g None needed

Storing and Serving Your Cold Brew

Once you press the concentrate, pour it into a sealed jar and refrigerate it. Most people keep it for about one to two weeks, though flavor fades over time. To serve, fill a glass with ice, add concentrate and water or milk to taste, and stir. A good starting blend is one part concentrate to one part water.

Tips and Common Mistakes

  • Do not use hot water to speed things up. Hot water extracts bitterness and defeats the point of cold brew.
  • Avoid grinding too fine. Powder clogs the mesh and leaves grit in the cup.
  • Do not press too hard. Forcing the plunger pushes fines through the filter.
  • Strain a second time through a paper filter if the concentrate looks cloudy.
  • Keep the carafe refrigerated during the entire steep, not just at night.

A stainless steel French press with a fine mesh filter holds up well to long steeps and cold water. Look for a model with a sturdy plunger seal, since a loose seal lets fines escape. View on Amazon

A burr grinder gives you the even, coarse grind this method depends on. Blade grinders produce uneven pieces that over-extract and under-extract in the same batch. View on Amazon

A small kitchen scale keeps your ratio consistent from batch to batch. Weighing beats scooping because coffee densities vary. View on Amazon

FAQ

Can you make cold brew in a French press without a fridge?

You can steep at room temperature, but the coffee will extract faster and can taste sour or muddy after a few hours. Refrigeration produces a smoother, more balanced cup and is the safer choice for longer steeps.

How long does French press cold brew last?

Stored in a sealed container in the refrigerator, concentrate usually stays fresh for one to two weeks. Diluted cold brew is best consumed within a day or two.

Do I need a special French press for cold brew?

No. Any standard French press works, though a model with a fine mesh filter gives the cleanest result. Some makers sell cold brew presses specifically, but a regular press is enough.

Conclusion

You can make cold brew with a French press using coarse grounds, a 1:8 ratio and 12 to 18 hours in the fridge. Adjust the ratio and steep time to match your taste, and you will have smooth concentrate ready for the week ahead. For more detailed methods, see How to Make French Press Cold Brew Coffee: A Step-by-Step Guide.

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Miles Sinclair

About Miles Sinclair

Miles Sinclair is part of our editorial team and reviews and edits our coffee beans & brewing methods guides, checking product details against manufacturer specifications and owner feedback.