The French press, also called a cafetière, coffee press or coffee plunger, is a simple manual brewer that makes a bold, full-bodied cup. The National Coffee Association (NCA) describes it as a device where coffee grounds steep in just-boiled water, and then a mesh filter is pressed down to separate the brew from the grounds.
How immersion brewing works in a French press
Unlike drip or pour-over methods that pass water through a bed of grounds, a French press uses full immersion. The NCA explains that the coffee grounds gently steep in hot water until brewing is complete, then a plunger with a built-in filter is pressed downward to separate the brewed coffee from the grounds. Because the water and coffee stay in contact the whole time, the resulting cup has a heavier body and more of the coffee’s natural oils than paper-filtered methods. The longer the brew time, the bolder the final cup will be, according to the NCA. This makes the French press a favorite for those who enjoy a rich, robust flavor.
Equipment you need
The NCA’s French press guide lists the essential tools: a kettle or hot water source, a thermometer (unless your kettle has one built in), and the French press itself. A French press consists of a cylindrical carafe, a plunger, and a built-in mesh filter. Carafes come in glass, stoneware, plastic, and metal, with single- or double-walled options. Double-walled designs help maintain a more consistent brewing temperature and keep coffee hot longer. The NCA suggests considering durability, capacity, and how many cups you typically brew at once, because trying to make a small batch in a large press can reduce quality.
You will also want a coffee grinder if you plan to grind whole beans, and a digital scale to measure coffee and water precisely. The NCA notes that a scale helps you brew more consistently and track adjustments over time. A kettle that lets you control temperature is helpful, but a standard stovetop or electric kettle works if you monitor the water with a thermometer.
Choosing the right grind size
Grind size has a big impact on taste. The NCA’s general rule is that the longer coffee is in contact with water, the coarser the grind should be. For French press, the NCA recommends starting with a coarse grind, similar to rock salt. If your coffee tastes bitter or sour, it may be over-extracted from too fine a grind, so try a coarser setting. If it tastes flat or watery, it may be under-extracted from too coarse a grind, so go a little finer. The NCA advises buying whole beans and grinding them right before brewing for maximum freshness. For more on matching grind to brew method, see our grind size guide.
Water temperature and coffee-to-water ratio
The NCA, referencing the Specialty Coffee Association, recommends water around 93 ± 3°C for French press brewing. The NCA suggests bringing water to a boil, then letting it rest for about 30 seconds before checking the temperature with a thermometer. For the ratio, the NCA gives a range of 1 gram of coffee to 10 to 16 grams of water (1:10 to 1:16). A starting point within that range lets you adjust strength to your taste. Our coffee-to-water ratio guide and water temperature guide cover these topics in more detail.
Step-by-step French press brewing
The NCA outlines these steps for making French press coffee. You can adapt them to your specific device and preferences.
- Bring water to a boil, remove from heat, and let it rest about 30 seconds. Check that the temperature is around 93 ± 3°C.
- Add your ground coffee to the carafe, then pour in the hot water.
- Wait about one minute. You will see a crust of grounds form on top. Stir gently with a wooden spoon to break up the crust.
- Place the lid on the carafe with the plunger pulled all the way up. Let the coffee steep for about three more minutes.
- Gently push the plunger all the way down. Serve immediately, or transfer the coffee to another container. The NCA warns that leaving coffee in the French press will cause it to keep brewing and turn bitter.
For a deeper look at how this method compares to others, visit our brewing methods comparison.
Cleaning your French press
The NCA stresses cleaning your entire French press after each use, including disassembling and washing the filter. Coffee grounds and coffee oil (caffeol) left on the device can make your next cup taste bitter. Follow the instructions that came with your press, and make sure no residue remains. A clean press is one of the simplest ways to keep your coffee tasting fresh.
Burr vs blade grinders: why it matters
The NCA recommends using a burr grinder for French press coffee. A burr grinder crushes beans between a moving grinding wheel and a non-moving surface, producing a more consistent grind. This evenness helps extract flavor uniformly, and burr grinders are less likely to overheat the grounds, preserving the coffee’s oils and aromas. A blade grinder, by contrast, uses a spinning metal blade that chops beans like a food processor. The NCA notes that blade grinders make it harder to achieve a consistent grind, which can affect taste. Over time, you may learn the right grinding duration for your blade grinder, but a burr grinder gives you more control. If you want to explore grinder options, see our burr grinder guide and coffee grinder overview.
Safety tips when using a French press
The NCA reminds users that safety should always be a top priority with hot beverages. Be mindful of how hot the carafe and liquids get during brewing. Handle a glass carafe with care. If you grind your own beans, be cautious around sharp grinder blades. Always follow the manufacturer’s instructions for your specific French press, grinder, and kettle.
Frequently asked questions
Can I use pre-ground coffee in a French press?
Yes, you can use pre-ground coffee. The NCA says that buying whole beans and grinding them right before brewing gives the freshest results, but pre-ground coffee will still work. If you buy pre-ground, look for a coarse grind labeled for French press, or ask the roaster to grind it for that method.
Why does my French press coffee taste bitter?
Bitterness often comes from over-extraction. The NCA suggests that if your coffee tastes bitter or sour, the grind may be too fine. Try a coarser grind. Also, make sure you serve or transfer the coffee immediately after plunging, because leaving it in the press continues extraction and can increase bitterness.
How do I avoid breaking the glass carafe?
The NCA advises considering durability when choosing a French press. Glass carafes can be more fragile than metal or stoneware. Handle the press gently, especially when stirring or plunging, and follow the care instructions from the manufacturer.
For more tips, recipes, and equipment advice, browse our French Press section and the full brewing methods area.
