Coarse coffee grounds steep fully immersed in hot water, then a metal mesh plunger separates the grounds from the brewed coffee, retaining oils and some fine sediment.
Coffee-to-water ratio
55–70 g per litre (typically 63)
Grind
Coarse, similar to sea salt or breadcrumbs.
Water temperature, as commonly used
92-96 celsius (typically 94)°C
Contact time
240-300 seconds (typically 240)
Skill level
beginner
Descriptive grind labels like this are illustrative starting points, not precise measurements — the same label can mean different particle sizes on different grinders. See the grind size guide for how to dial this in on your own equipment.
In short
A French press brews by immersion: all the coffee sits in all the water for several minutes, and a metal mesh is then pushed down to hold the grounds at the bottom while you pour. Nothing is filtered through paper, so the oils and the finest particles stay in the cup.
Two consequences follow, and they explain almost everything about the method. It is forgiving, because every particle gets the same contact time whatever your pouring is like. And it makes a heavy, textured cup, because the mesh cannot catch what paper would.
Why immersion is forgiving
CoffeeHQ explanation
In a pour-over, fresh water keeps arriving at the top of the bed, so extraction depends on how evenly you pour and how fast the water drains. In a press the water and coffee are simply left together. As the water fills with dissolved coffee it extracts more slowly, so the brew approaches a ceiling rather than racing past it.
That self-limiting behaviour is why an extra minute in a French press changes the cup far less than an extra minute in a dripper. It is also why grind matters less for flavour here than for texture: a finer grind does extract a little more, but its main effect is to put more silt through the mesh.
A starting recipe and the room around it
Typical range
Thirty grams of coffee to 500 grams of water makes two generous mugs and sits in the middle of the usual range.
A starting recipe and the room around it
Variable
Typical range
What moving it does
Coffee to water
About 55–70 g per litre (roughly 1:14 to 1:18)
The strength control. More coffee makes a stronger cup without changing its character much.
Grind
Coarse, like coarse sea salt
Coarser means less sediment and a slightly lighter cup; finer means more body and more silt.
Water temperature
About 92–96 °C
Just off the boil. A cold, heavy glass or steel press will take several degrees out of the water unless it is preheated.
Steep time
About 4–5 minutes
Longer steeps extract a little more and give fines time to settle. Shorter than about three minutes tends to taste thin.
These are conventional ranges, not rules, and they describe a manual press with a standard metal mesh. A large press loses heat more slowly than a small one and may suit a slightly shorter steep.
The method, with the reason for each step
CoffeeHQ explanation
Preheat the press. Rinse it with hot water and empty it. Glass and steel are cold enough to pull the brew below the temperature where it extracts well.
Add coffee, then all the water. Pour steadily so every particle is wetted, filling to your target weight. There is no need for a separate bloom pour; the whole brew is one long soak.
Stir once, gently. A single stir sinks the floating crust so that all the coffee is in contact with water. Repeated stirring mostly produces more fine particles.
Wait, then press slowly. After four minutes, push the plunger down with light, even pressure. Forcing it stirs up the bed and drives silt through the mesh.
Pour everything out. Decant the whole brew straight away, into cups or a jug. Coffee left sitting on the grounds keeps extracting and turns bitter.
For a cleaner cup: let it settle
CoffeeHQ explanation
Most of what people dislike about French press coffee is the sediment, and most of the sediment can be avoided with patience instead of equipment. After the four-minute steep, break the crust with a spoon, skim off the foam and floating bits, and leave the press alone for another five minutes or more. The fines sink.
Then lower the plunger only as far as the surface of the liquid, to act as a strainer, and pour gently without tilting past the point where the bed begins to move. The last couple of centimetres stay in the press. The cup is noticeably clearer, at the cost of a longer wait and a slightly cooler drink.
From recipe to your cup: change one thing
CoffeeHQ explanation
The recipe above is where to begin, not where to end up. What turns it into your recipe is a short loop: brew it, notice what happened, change one thing, brew again.
Brew the starting recipe once, by weight. Weigh the coffee and the water and time the steep. A press filled by eye is rarely the ratio it is thought to be, and without a fixed starting point no later change can be read.
Notice before you taste. Did a crust form? Was the plunger easy or hard to push? Is the brew clear or cloudy through the glass? Then taste, and if the cup is intense as well as unpleasant, add a teaspoon of hot water and taste again: a fault that fades was partly strength.
If the strength is wrong, change the ratio. This is where a press is at its most obedient. A model of steeped coffee, tested against measurements by a university group, found that extraction settles at about the same level whatever the ratio, and that strength follows the ratio. Thin: about a tenth more coffee. Too much: about a tenth less, or water in the cup.
If the balance is wrong, change the grind, then the time. Sharp and thin: grind a clear step finer, staying coarser than you would for paper. Bitter and silty: a clear step coarser. Steep time is the gentler lever, and it does not behave as brew time does in a pour-over: no fresh water is being pushed through, so a longer steep climbs slowly and levels off. In the measured one-litre brews strength was still rising after many minutes.
If the texture is wrong, change what happens after the steep. Sediment and silt are decided by the crust, the plunge and the pour, which the next section sets out. They are separate from strength and balance, so change them separately.
Write down what you changed. One change per brew, and a note of what it did. Two changes at once and a better cup tells you nothing about which one helped.
The ratio is the firm control, the grind the next, the time the gentlest. That order is the reverse of how most people reach for them.
After the steep: crust, plunge and pour
Tendency, not a guarantee
Four choices that change sediment and texture and little else. They are practice; none has been tested in a study read for this page. Try them one at a time.
Break the crust, or leave it
Stirring the floating layer and skimming the foam lets the grounds and fine particles sink before you pour. Leaving it and plunging straight through is quicker and carries more of them into the cup. If your cup is silty, breaking and skimming is the first thing to try.
Plunge to the bottom, or only to the surface
The plunger is a strainer. Driving it to the bottom sets the whole brew moving and lifts settled fines back up; resting it at the surface holds the grounds back while you pour and disturbs nothing. If the plunger is hard to push, do not force it: the grind is too fine, and hot coffee can spurt from the spout.
Decant, or leave it in the press
Coffee left on the grounds goes on steeping, so the second cup is not the first. Pour all of it off as soon as it is ready, into cups or a warmed jug, if later cups turn bitter.
Pour all of it, or leave the last
The finest particles end up at the bottom of the press and then at the bottom of the cup. Leaving the last of each behind removes most of the sludge. A metal mesh cannot stop them altogether; only pouring the brew through paper does, and that takes most of the oil and some of the body with it.
What to change when it is not right
Tendency, not a guarantee
Gritty, silty or muddy
Usually because: Fine particles are passing the mesh. A blade grinder, or a burr grinder set too fine, produces a lot of them.
Change first: Grind coarser first. If the grinder cannot go coarser evenly, use the settling method above.
Usually because: Usually too little coffee for the water. If it is sharp as well as thin, too little was taken instead: a coarse grind, a short steep, or water that cooled in an unheated press.
Change first: Weigh the coffee and water, then add coffee for the same water.
Brew two presses side by side and leave one for eight minutes instead of four.
Keep the same
Coffee, water, grind and temperature.
What to notice
The longer brew is usually a little fuller but not dramatically different. That small gap is what self-limiting extraction looks like.
Plunged against settled
Change
Make one brew the standard way and one with the settling method, pouring without fully plunging.
Keep the same
The recipe and the total time before the first sip, as far as you can.
What to notice
Compare the last mouthful of each cup. This shows how much of the press's character is flavour and how much is sediment.
Against other ways of brewing
Tendency, not a guarantee
V60 pour-over — Paper-filtered and poured by hand: lighter in body and clearer in flavour, and considerably more sensitive to technique.
AeroPress — Also immersion, but pushed through paper and brewed in a couple of minutes. Cleaner and smaller in volume.
Cold brew — Immersion again, with time doing the work heat does here. Many people make it in a French press.
What to do next
Make my coffee better — choose the French press, tick what you noticed, and get the quickest check and one change to make.
Brew recipe scaler — presses come in very different sizes, and this keeps the ratio right for yours.
French press vs. V60 — the clearest illustration of what a paper filter takes out of the cup.
Adjusting grind size — grind is the main control over sediment, and this explains how to change it deliberately.
Extraction basics — explains why a brew slows down as it goes, which is the idea behind this whole method.
Become a barista — A structured programme from dose and grind through milk, drinks and maintenance.
Owning a French press: the plunger, the glass and the mesh
The sections above cover the recipe and how to adjust it. This part is about the object: how the plunger is put together, what to do with a new press, what the feel of the plunge tells you, what a maker's instructions say about glass and hot water, and which parts can be replaced.
Your maker's instructions come first. The lines marked as the maker's come from one large maker's instruction sheet for its glass presses. Steel and plastic presses, and other makers' glass ones, have their own instructions, including on whether the parts can go in a dishwasher.
I have just bought one. What do I do first?
Take the plunger apart once. Unscrew the filter assembly from the end of the rod and lay the pieces out in order. Knowing how it goes back together is what makes cleaning it possible.
Wash every piece. The beaker, the lid and each layer of the filter. Coffee oil and manufacturing residue both collect in the mesh.
Check the glass. The maker's instruction is to look for scratches, cracks and chips, and not to use a beaker that has any.
Stand it on a dry, flat, heatproof surface that will not slip. The maker asks for this before any water goes in. You will be pressing down on it.
Add coarse-ground coffee, then hot water, leaving room at the top. The maker's sheet asks for coarse coffee only, hot water that is not boiling, and at least 2.5 cm of space below the rim. Use the weighed starting recipe in the section above.
Stir with plastic or wood, put the plunger on, and wait. The maker warns that a metal spoon can scratch or chip the glass. Rest the plunger on top without pressing. The sheet asks for at least four minutes.
Plunge slowly, pour it all out, and taste. Little more than the weight of your hand, with the spout turned away from you. Pour the whole brew off the grounds. Then note what you would change, and change one thing.
What each part of a French press is for
The beaker
Holds the coffee and the water for the whole steep. Glass shows you the brew; double-walled steel keeps it hot and cannot break.
The frame and handle
On a glass press, the metal or plastic cage that carries the beaker. The beaker lifts out of it for washing and for replacement.
The lid
Guides the rod so the plunger travels straight, and keeps heat in. On some presses it turns to open or close the spout.
The plunger rod and knob
What you push. The filter assembly screws onto its lower end.
The filter assembly
Usually three pieces: a sprung plate whose coiled edge presses outwards against the glass, a fine mesh screen, and a perforated cross plate that holds the mesh flat. The mesh strains the grounds; the sprung edge is what stops them going round the side.This is a general description. Yours may have more or fewer layers.
What the feel of the plunge tells you
CoffeeHQ reasoning
The plunger does not brew the coffee. The steep did that. The plunger is a strainer, and how it feels going down is a reading of what is in the beaker.
A plunger that sinks with almost no resistance means a coarse grind, or a small brew in a large press. One that needs real effort means fine particles are packing against the mesh. That resistance is worth noticing because the same fine particles are what make a cup silty.
The maker's instruction for a plunger that becomes hard to push is not to push harder. Lift it out, stir, and plunge again slowly.
Coffee left on the grounds keeps changing
CoffeeHQ reasoning
Pushing the plunger down does not separate the coffee from the grounds. The grounds are held at the bottom, still wet, still in contact with the liquid above them. A second cup poured twenty minutes later has steeped for twenty minutes longer than the first.
If the last cup is harsher than the first, that is the usual reason, and the answer is to pour the whole brew into cups or a warmed jug as soon as it is plunged.
What changes what in a French press
Each line is a tendency and the mechanism behind it, not a promise about taste. The last part of each says what else the result depends on.
Grindfiner or coarser
Finer gives up more to the water in the same time, makes the plunge harder and puts more silt in the cup. Coarser is cleaner and easier to plunge and tends to take less.
But it also depends on: The steep time. Grind and time work together: a coarser grind steeped longer and a finer one steeped shorter can land in similar places.
Ratiomore coffee or more water
Strength follows the amounts. This is the main control in a steeped brew.
But it also depends on: Measuring by weight. A scoop of coarse coffee and a scoop of fine coffee weigh differently.
Steep timelonger or shorter
More is taken from the coffee the longer it steeps, quickly at first and slowly later. A longer steep also lets more grounds sink, which can make the cup cleaner.
But it also depends on: The grind, and whether the coffee is poured off the grounds when the time is up.
Agitationa stir, or none
A stir wets all of the coffee and speeds up what the water takes. Stirring late, or hard, lifts fine particles that had settled.
But it also depends on: When it is done. A stir at the start and a stir before plunging do different things.
The plungeslow and partial, or fast and to the bottom
A slow plunge disturbs the settled grounds least. A fast one stirs them up and can force fine particles through or round the mesh.
But it also depends on: How fine the grind is, and whether the mesh still seals against the wall.
Decantingpour it all off, or leave it in the press
Coffee poured off the grounds stops changing. Coffee left on them goes on steeping.
But it also depends on: How long it sits. A press emptied within a few minutes shows little of this.
Water temperaturehotter or cooler
Hotter water generally dissolves more, more quickly. The maker's sheet asks for hot water that is not boiling.
But it also depends on: The press. A cold, thick glass beaker takes heat from the water unless it is warmed first.
When a French press goes wrong
For each thing you might notice: what to consider, since there is rarely one cause, and the first thing to try. One change, then brew again.
The cup is muddy
Consider
A strong brew: the flavours separate when a little water is added
A grind with a lot of very fine particles
It was plunged hard and poured at once
Try first: Let the brew stand for a few minutes before pouring, with the plunger resting at the surface, and pour slowly. Then taste before changing the grind.
The filter was put back together in the wrong order
Try first: Stop pouring before the end and leave the last of the liquid behind. If grounds, not just silt, are in the cup, look at the mesh and how the assembly is stacked.
A strong brew: the harshness fades when water is added
The coffee sat on the grounds after plunging
Fine particles in the cup
Old oil in the mesh
Try first: Add a little hot water to the cup. If the harshness fades, use a little less coffee. If only the later cups are harsh, pour everything off as soon as it is plunged.
Try first: Do not force it: the maker warns that excessive force can make scalding liquid shoot out. Lift the plunger out, stir, and plunge again slowly. Grind coarser next time.
Grounds get past the filter
Consider
A mesh that is frayed, dented or bent at its edge
The sprung plate is not pressing evenly against the glass
The assembly is loose on the rod
A replacement beaker of a slightly different diameter
Try first: Take the assembly apart, check each layer is flat and in order, and screw it back firmly. A frayed or dented mesh needs replacing.
The mesh is bent or warped
Consider
It was forced down against a clogged brew
It was bent during cleaning
It has worn at the edge with use
Try first: A new mesh is a small spare part and restores the press. Do not try to flatten a creased one; it will not seal again.
Change one thing, observe, learn
Each of these changes one thing and holds the rest. Brew the two side by side where you can, and write down what you notice before deciding which you prefer.
Pour at once against pour after a rest
Change
Plunge and pour one brew immediately; plunge another only to the surface, wait five minutes, and pour slowly.
Keep the same
The coffee, the grind, the amounts and the steep.
What to notice
How much clearer the rested cup is, and whether it tastes any different apart from the silt.
The first cup against the last
Change
Pour one cup straight after plunging and another from the same pot fifteen minutes later.
Keep the same
Nothing else changes: it is one brew.
What to notice
What the extra time on the grounds did. This is the case for pouring the whole pot off at once.
Two grinds, one steep
Change
Brew at your usual setting and a clear step coarser.
Keep the same
The coffee, the amounts and the steep time.
What to notice
The feel of the plunge, the silt in the cup and the taste. Then try the coarser one steeped a little longer.
What to avoid with a French press
Forcing the plunger. The maker's sheet says excessive force can cause scalding liquid to shoot out of the pot; if the plunger sticks, lift it out, stir and plunge again slowly.Maker's instructions: Bodum
Using fine-ground coffee. The maker gives the reason as safety: a fine grind can clog the filter and create high pressure.Maker's instructions: Bodum
Using a beaker that is scratched, chipped or cracked. The maker says to fit a replacement beaker before using the pot again.Maker's instructions: Bodum
Stirring with a metal spoon in glass, or filling to the brim. The maker asks for a plastic spoon and a minimum of 2.5 cm of space at the top.Maker's instructions: Bodum
Putting a glass press on a hob. The maker's sheet says these presses are not for stove-top use, and that children should be kept away while one is in use.Maker's instructions: Bodum
Putting the filter back together loosely or out of order. A mesh that is not held flat lets grounds round its edge.CoffeeHQ reasoning
Cleaning it properly, and what can be replaced
Every time
Unscrew the filter assembly and clean the plunger unit after each use, as the maker's sheet asks. Emptying the grounds into a bin or compost and not the sink is common practice.Maker's instructions: Bodum
Let the glass cool before running cold water into it, and lift the beaker out of its frame by its body, not its lip.Common practice
From time to time
Take the three layers of the filter apart and wash each one. Oil trapped between them goes stale and gives every brew the same flat, bitter edge.Common practice
The maker's sheet says all parts of its glass models are dishwasher safe. That is one maker's statement for its own presses; check yours.Maker's instructions: Bodum
Parts that wear
The mesh screen
A frayed edge, a dent or a crease, and grounds in the cup that were not there before. It is sold as a spare.Common practice
The glass beaker
Any scratch, chip or crack. The maker's instruction is to replace it, and the frame takes a new one of the same size.Maker's instructions
The sprung plate
A coil that has been stretched or flattened and no longer presses against the wall all the way round.CoffeeHQ reasoning
What else changes how it is used
Only the things that change the brewing. None of this is a list of things to buy.
A scale
Ratio is the main control in a press, and a scoop cannot hold it steady.
A burr grinder
The amount of fine dust in the grind decides how silty the cup is and how hard the plunge is.
A warmed jug or flask
Somewhere to pour the whole brew, so that none of it goes on steeping.
A spare mesh and, for glass, a spare beaker
The two parts that fail. Both are replaceable without buying a new press.
From the first brew to knowing it well
Weigh it and time it. A weighed recipe and a timed steep, repeated until two pots match.
Pour it all off. Make decanting the whole brew a habit. It removes the largest source of difference between cups.
Read the plunge. Connect how the plunger feels with how silty the cup is, and let that guide the grind.
Trade grind against time. Go a step coarser and steep a little longer, and compare. This is how to get a cleaner cup without a thinner one.
Refine the finish. A rest before pouring, a partial plunge, a slow pour that stops early. Each one for a clearer cup from the same brew.
Extraction basics — Why strength and extraction are two things, which decides what to change.
How this method is usually described
Produces a full-bodied, heavier cup with more perceived texture and some fine sediment, since the metal mesh plunger doesn't remove oils or the smallest particles the way a paper filter does. Flavour tends to read as rounder and less bright than paper-filtered methods.
A description of the usual expectation, not a measured result. The coffee, its roast, the water and how it is brewed change the cup at least as much as the brewer does.
The brew tastes bitter or harsh rather than balanced.
Try the first step below on its own, taste, then move to the next one only if needed.
Change
Try
Why
Watch for
FirstGrind size
Increase: a small step coarser
Usually reduces extraction.
—
Dose
Decrease: a gram or two less coffee for the same water, or a splash of hot water in the cup
Makes the cup a little weaker. In the one panel study CoffeeHQ has read, bitterness rose with strength and showed no clear link to extraction, so this is worth trying before or beside the grinder.
Go too far and the cup turns thin.
Brew or steep time
Decrease: steep 30-60 seconds less
Less contact time usually reduces extraction.
—
Water temperature
Decrease: let the water cool slightly off the boil
Slightly cooler water extracts more slowly, softening bitterness.
—
Plunge / decant
Check / reset: decant into another vessel immediately after plunging
Coffee left in contact with grounds after plunging keeps extracting and can turn bitter.
—
When to reset: Decant promptly and re-taste before changing grind or time.
Each step links to its own page; this is the order they belong in.
I have coffee and a brewer
You own something to brew with and want a good cup from it.
Find your brewer's page, start from its recipe, and change one thing at a time. The later steps are for when the cup is not right, and for finding out why a change worked.
1Find your brewerWhat it does to the coffee, and a starting recipe labelled as a starting point.
2Work out the amountsCoffee and water for the cup you are making; the recipe scaler follows from it.
3If the cup is not rightChoose the brewer, tick what you noticed: the quickest check, and one change.
4One change per brewThe same loop written out for filter coffee, from the first brew to a recipe you keep.
5Why the change worksStrength and extraction as two numbers, and what a taste can and cannot tell you.
6Test it yourselfHow to compare two cups so the difference is the thing you changed.
