How to dose a 1L French press?

For a 1-litre French press, the recommended ratio is 60 to 70 grams of coffee per 1,000 ml of water, roughly 1 level tablespoon (6-8g) per 100 ml. This ratio falls within the SCA range for filter coffee (55-65g/L). The grind should be coarse, like sea salt, and the steeping time 4 to 5 minutes at 92-96°C.

The French press (also called a cafetière or plunger) is one of the simplest and most widespread brewing methods in the world, among both amateurs and professionals. Its principle is total immersion: the grounds remain in contact with the water for the entire steeping duration before being separated by the plunger pressure. For a 1-litre capacity, dosing is crucial because an error of a few grams multiplied across ten cups will have a major impact on taste.

The base ratio of 60g/L (SCA filter coffee ratio) yields a balanced and accessible coffee. For a stronger brew, go up to 65-70g/L. For a lighter coffee suited to long drinking or palates unaccustomed to strong coffee, 50-55g/L is acceptable. The golden rule is to use a kitchen scale rather than volumetric measures (spoons), since the weight of ground coffee varies considerably depending on bean density and grind size.

The grind is coarse, coarser than for an electric filter, similar to coarse sea salt or coarse sugar. Too fine a grind produces a cloudy, gritty and over-extracted drink. Water temperature sits at 92 to 96°C (boiling water left to rest for 30-60 seconds). Procedure: pour a little hot water over the coffee for the bloom (30 seconds), then add the remaining water, stir gently, place the lid without pressing and wait 4 minutes. Press the plunger slowly (20-30 seconds). Pour immediately, because leaving the coffee steeping longer with the grounds over-extracts it.

For a 1L French press serving 4 people, the reference recipe is: 60g coffee + 1,000 ml water at 93°C, 4 minutes steeping, plunger pressed slowly. A surprising fact: the French press is one of the rare methods that allows coffee oils (cafestol and kahweol) to pass into the cup because there is no paper filter to trap them, giving it more body but also higher diterpene content, substances associated with a slight increase in blood cholesterol with high daily consumption.

French press recipes by capacity

How do you calculate the dose for a 1L French press?

For a 1-litre French press, the recommended ratio is 60 to 70 grams of coffee per 1,000 ml of water, roughly 1 level tablespoon (6-8g) per 100 ml. This ratio falls within the SCA range for filter coffee (55-65g/L). The grind should be coarse, like sea salt, and the steeping time 4 to 5 minutes at 92-96°C.

Dosing a 1-litre French press correctly is a calculation that many home brewers approach by guesswork, often producing either weak, under-dosed brews or overpowering, over-extracted ones. The SCA Golden Cup standard recommends 55-65g of coffee per litre of brewing water as a general guideline, which for a 1-litre French press translates to 55-65g of medium-coarsely ground coffee. This range accounts for the variation in individual taste preference and coffee density: lighter, more porous roasts at the lower end of the range; denser, more intense coffees at the higher end. For most medium-roasted specialty coffees, 60g per litre is a reliable starting point that produces a full-bodied, satisfying result without tipping into over-extraction territory.

The complication for 1-litre French press dosing is that a 1-litre carafe cannot actually hold 1 litre of water plus 60g of coffee without overflow, because the coffee grounds displace a volume of water and the bloom creates additional expansion. A practical adjustment is to use 900g of water (not 1000g) with 54-60g of coffee, which fills most 1-litre carafes to an appropriate level while maintaining the target ratio. Weighing both coffee and water on a kitchen scale rather than using volume measurements (tablespoons of coffee, cups of water) removes the ambiguity that drives inconsistency in home French press results: two "tablespoons" of coffee can vary by 50% in actual mass depending on grind size and how packed the tablespoon is, while a weighed 60g is always 60g regardless of how you scoop it.

Which practical habits keep your 1L French press dose consistent every time?

Once you have established your target dose, taste your brew at different times post-steep: at 3 minutes, 4 minutes, and 5 minutes (without plunging, just taste a small sample with a spoon). The progression from under-extracted brightness at 3 minutes to fully developed balance at 4 minutes and early over-extraction at 5 minutes will calibrate your palate to your specific equipment and coffee. Note that water temperature at the time of brewing affects extraction speed: if you pour at 90 °C rather than 95 °C, your optimal steep time may extend by 30-60 seconds. Seasonal temperature variation in your kitchen also affects this: water in a cold carafe in winter drops temperature faster than in summer, which subtly shifts the extraction dynamic over the same four-minute steep. Develop the habit of pre-heating your French press carafe with hot water before brewing to reduce temperature drop and produce more consistent results year-round.