How to Make Filter Coffee

What Is Filter Coffee?

Filter coffee is brewed when water passes through a bed of ground coffee and then through a paper, metal or cloth filter. The filter separates the drink from the grounds while the water carries soluble flavour into the cup.

The term covers several methods. A V60 and Chemex are manual pour-over brewers, while an automatic drip machine controls the pouring for you. All produce a cleaner cup than an unfiltered immersion method because the filter holds back fine particles and some coffee oils.

Filter coffee is not the same as an Americano. An Americano is espresso diluted with hot water; filter coffee extracts the full drink directly through the coffee bed.

Best Coffee-to-Water Ratio for Filter Coffee

A useful starting point is 60 g coffee per litre of water, or approximately 1:16.7. Use the coffee-to-water ratio calculator when you want to scale a different dose.

Coffee	Water	Approximate yield
15 g	250 ml	1 mug
30 g	500 ml	2 mugs
45 g	750 ml	3 mugs
60 g	1 litre	4 mugs

For a stronger cup, move towards 1:15. For a lighter cup, try 1:17. Ratio changes concentration; it does not fix poor extraction by itself.

Best Grind Size for Filter Coffee

Start with a medium grind, similar in texture to table salt. The exact setting depends on the brewer, filter, batch size and grinder, so use brew time and taste as feedback.

• Grind slightly finer when the coffee runs quickly and tastes sour, thin or underdeveloped.
• Grind slightly coarser when the brew stalls and tastes bitter, dry or hollow.
• Use a somewhat coarser grind for a large Chemex batch than for a small V60.

The coffee grind size guide explains why small changes affect flow and extraction.

Filter Coffee Methods

V60 pour over

A V60 gives you direct control over pouring, agitation and brew time. It is a good choice for a clear, aromatic cup and for learning how small recipe changes affect taste. Follow the V60 Pour Over recipe for a timed method.

Automatic drip machine

An automatic machine heats and distributes the water for you. Weigh the coffee and water, use a clean basket and check that the machine reaches a suitable brewing temperature. A consistent machine can make excellent filter coffee with much less hands-on work.

Chemex

Chemex uses thick paper filters that create a particularly clean cup. Rinse the paper thoroughly and grind slightly coarser than for a small V60 so a larger batch does not drain too slowly.

AeroPress hybrid

An AeroPress is primarily an immersion brewer, but recipes that use a paper filter produce a clean cup with some filter-coffee character. Start with the AeroPress Daily recipe and dilute only when the result is more concentrated than you prefer.

French Press comparison

A Classic French Press steeps coffee in water before a metal mesh separates the grounds. More oils and fine particles remain in the cup, giving it a fuller body than paper-filtered coffee.

Basic Filter Coffee Recipe

For one mug, use 15 g coffee, 250 ml filtered water, a medium grind and water at 92-96°C.

1. Heat the water and rinse the paper filter with hot water.
2. Add the ground coffee and gently level the bed.
3. Place the brewer and cup or server on a scale, then tare it.
4. Pour approximately 45 ml of water, wetting all the coffee, and wait 30-45 seconds.
5. Continue pouring slowly and evenly until the scale reaches 250 ml.
6. Let the water drain through. Aim for a total brew time of roughly 2:30-3:30.
7. Remove the brewer, swirl the coffee and taste it as it cools.

Use fresh coffee, filtered water and clean equipment. For roast-specific starting points, see coffee brewing temperature and the guide to coffee freshness and roast dates.

Filter Coffee vs Americano

Feature	Filter Coffee	Americano
Brewing method	Water passes through coffee	Espresso diluted with water
Texture	Clean and light	More concentrated
Crema	No	May be present
Typical size	200–350 ml	150–300 ml

Neither is automatically stronger. The dose, final drink size and recipe determine concentration, while the brewing method changes texture and flavour.

Common Filter Coffee Problems

The coffee tastes weak or watery

Use a little more coffee or less water, but check the brew time too. A very fast brew may need a finer grind rather than a dramatically stronger ratio.

The coffee tastes bitter or dry

Grind slightly coarser, shorten an excessively long brew or use slightly cooler water for a dark roast. Change one variable and brew again.

The coffee tastes sour

Try a slightly finer grind and make sure all the grounds are evenly wet. Water that is too cool can also leave light-roast coffee under-extracted.

The water drains too quickly

Use a finer grind and pour more gently. Check that the filter sits correctly and that water is not bypassing the coffee bed around the edge.

The water drains too slowly

Use a coarser grind, reduce aggressive stirring and avoid pouring directly onto the paper. Excess fine particles can block the filter.

The cup tastes muddy or dry

For a muddy cup, grind coarser and pour with less agitation so fewer fine particles block the filter. For a dry finish, shorten an excessively long brew and check that the coffee is not being extracted too aggressively.

Frequently asked questions

What is filter coffee?

Filter coffee is made by passing hot water through ground coffee and a filter. The filter separates the brewed drink from the grounds and usually creates a clean cup with less sediment.

What is the best filter coffee ratio?

Start with 60 g of coffee per litre of water, approximately 1:16.7. That is 15 g coffee for 250 ml water. Move towards 1:15 for a stronger cup or 1:17 for a lighter one.

How much coffee should I use for one cup?

Use 15 g of coffee for one 250 ml cup as a balanced starting recipe. Scale both coffee and water together when your cup or batch is larger.

What grind size is best for filter coffee?

Start with a medium grind. Grind finer if the brew runs quickly and tastes sour, or coarser if it drains slowly and tastes bitter or dry.

Is an Americano the same as filter coffee?

No. Filter coffee is extracted as water passes through ground coffee and a filter. An Americano is made by brewing espresso first and then diluting it with hot water.

Can I make filter coffee without a machine?

Yes. A manual V60, Chemex or other pour-over brewer needs only a filter, a kettle and a cup or server. Weighing the coffee and water makes the result easier to repeat.