A French press is one of the easiest cold brew tools you already own. To make cold brew in a French press, you coarsely grind coffee, steep it in cold water for 12 to 24 hours, press the plunger down slowly, and decant the coffee off the grounds straight away. The beauty of a cold brew french press setup is that the press is both the steeping jar and the filter, so you steep and strain in one container with no paper, no second bottle, and no mess.
Why a French press is a great cold brew vessel
Cold brew is just coarse coffee soaked in cold or room-temperature water for a long time. That slow, low-temperature steep pulls out sweetness and body while leaving behind much of the acidity and bitterness that hot water extracts. To do it, all you really need is a container to hold the slurry and a way to separate the liquid from the grounds at the end.
A French press (also called a cafetiere) does both jobs at once. The carafe is your steeping jar, and the mesh plunger is your filter. That is why a cold brew cafetiere method is so popular: there is no straining through a sieve into a second vessel and no soggy filter to deal with. You can also see exactly how full your grounds bed is, which makes it easy to scale the recipe to your press size.
One thing to know up front: the metal mesh is a coarse filter, so a small amount of fine sediment can slip through. That is normal for any immersion brew, and we will cover how to get a cleaner cup below.
What you need
- A French press of any size (the recipe scales by ratio, not by a fixed amount)
- Coarsely ground coffee, ground like coarse sea salt
- Cold or room-temperature filtered water
- A spoon for stirring and fridge space
- Optional: a kitchen scale, and a paper filter for polishing the final cup
Grind matters more than almost anything else here. Too fine and the brew turns silty and over-extracted, and the mesh clogs when you press. A coarse, even grind keeps the cup clean and makes pressing smooth. If you are dialing in your grinder, our guide to the best grind for cold brew coffee walks through what coarse should look and feel like.
How to make cold brew in a French press
- Measure your coffee and water. Decide whether you want a strong concentrate to dilute later (about 1:8 coffee to water) or a milder ready-to-drink brew (about 1:15). A scale makes this exact, but you can also eyeball it. For more detail on getting this right, see our cold brew coffee ratio guide.
- Add the grounds, then the water. Tip the coarse grounds into the empty carafe and pour the cold water over them. Adding water second helps wet the grounds evenly.
- Stir to wet everything. Give it a good stir so no dry clumps float on top. Every ground should be saturated.
- Leave the plunger up and steep. Rest the lid on top with the plunger pulled all the way up, so the mesh sits above the coffee and does not block the surface. Put the whole press in the fridge.
- Wait 12 to 24 hours. Twelve hours gives a lighter cup; closer to 24 hours gives a fuller, sweeter, stronger brew. A cold fridge slows extraction, so the longer end of that range is your friend.
- Press slowly. When the time is up, press the plunger down gently and steadily. A slow press keeps fines from being forced through the mesh. If it feels like hard work, your grind was likely too fine.
- Decant immediately. This is the step people skip and regret. Pour all of the coffee out of the press into a clean jar or bottle right away. Coffee left sitting on the grounds keeps extracting and turns bitter within an hour, even after you have pressed.
- Serve and store. Pour over ice. If you made a concentrate, dilute to taste with cold water, milk, or a plant milk, usually around 1:1. Sealed and refrigerated, your brew keeps well for several days.
Because this is made with real coffee, your cold brew is not caffeine-free. A long steep extracts plenty of caffeine, and a concentrate is strong, so dilute it before judging the strength.
Cold brew french press ratio and time
Use this as a quick reference. Ratios are coffee to water by weight; times assume a fridge steep.
| Goal | Coffee : water | Steep time | How to serve |
|---|---|---|---|
| Strong concentrate | ~1:8 | 14-24 hours | Dilute ~1:1 over ice with water or milk |
| Balanced concentrate | ~1:10 | 12-20 hours | Dilute lightly, or sip strong over ice |
| Ready to drink | ~1:15 to 1:17 | 12-18 hours | Pour straight over ice, no dilution |
| Grind | Coarse (sea salt) | - | Even grind = cleaner press |
Tips for a cleaner, better cup
- Do not press too early. Pressing before the steep is done gives you weak, sour coffee. Give it the full time.
- Polish out the sediment. For a glass-clear cup, pour the pressed coffee through a paper filter (a basket filter set in a dripper or sieve works) to catch the fines that slip past the mesh.
- Scale to your press. A bigger press just means more coffee and water at the same ratio. Fill it most of the way so the grounds stay submerged.
- Clean the mesh well. Oils and fines build up in the metal screen. Unscrew and rinse the filter assembly after each batch, or it will start to taste stale and brew slower.
- Use good water. Cold brew is mostly water, so filtered water genuinely tastes better than hard tap water here.
How this differs from other French press and cold brew methods
This page is specifically about cold brewing in a French press, which is worth separating from a few close cousins. Standard hot French press brewing uses near-boiling water and a four-minute steep, not an overnight one. If that is what you are after, our French press guide covers the hot method, grind, and timing in full.
The press is also just one container for cold brew. You can make the same drink in any large jar or bottle and strain it through a filter at the end, which is the general approach in our walkthrough of how to make cold brew coffee. The French press simply combines the jar and the strainer, which is its main advantage. Whichever vessel you use, the core rules are identical: coarse grind, cold water, a long steep, a gentle strain, and an immediate decant off the grounds. Master a cold brew coffee french press batch once and you will have a smooth, low-acid brew on tap whenever you want it.
Cold brew rewards patience more than precision. Get your grind coarse and even, give it the time it needs, and remember the one rule that separates a sweet batch from a bitter one: press slowly and pour it off the grounds the moment it is done. From there, play with your ratio and steep time until the cup tastes like yours.