Brewing methods

What is a French press?

A French press — also called a cafetière or plunger pot — is an upright glass or steel carafe in which coarsely ground coffee is steeped for about 4 minutes, then separated by pushing a mesh plunger down. As a full-immersion method, it produces a cup rich in oils and body, with a round aromatic profile and no paper-filter masking.

The plunger coffee pot has a disputed origin: an early 1852 patent was filed in Paris by Mayer and Delforge, and a metal-mesh version was patented by Italian Attilio Calimani in 1929. The modern universal design, however, belongs to Danish company Bodum, whose Chambord model has been sold since 1974. English speakers say 'French press', Dutch speakers use 'cafetière', Germans call it 'Pressstempelkanne'.

The method is total immersion: all grounds stay in contact with all the water for the whole brew. That is a fundamental departure from pourover (V60, Chemex), which uses continuous gravity percolation. Immersion levels out extraction — every particle sees an equivalent volume of water — which makes the method fairly forgiving of uneven grind, a real advantage for home brewers who do not own a high-end grinder.

The mesh filter — 0.3 to 0.5 mm openings — lets oils and fine particles ('fines') pass, unlike a paper filter that traps them. The result is a rounder, oilier mouthfeel but also a slightly cloudy cup with a thin residue at the bottom. For drinkers watching cholesterol, unfiltered brews contain diterpenes (cafestol, kahweol) that measurably raise LDL over time. Studies in the European Journal of Preventive Cardiology (Thelle, Strandhagen and others) quantify the effect at a few mg/dL.

In Belgium, the French press is the most common home coffee tool after the electric drip machine. It has a particular place in guest houses, Ardennes holiday homes and Walloon Brabant gîtes, where it delivers a quality cup without a complicated machine. Its simplicity and minimal maintenance (rinse, brush, occasional descaling) also make it a common office brewer.

French press vs pourover vs espresso — profile comparison

CriterionFrench pressV60/ChemexEspresso
MethodImmersionGravity percolationPressure percolation
Time4 min3-4 min25-30 s
FilterMetal meshPaperFine metal
Oils retainedNo (oils pass)Yes (paper absorbs)Partially
GrindCoarseMediumVery fine
Body in cupDense, oilyClean, clearConcentrated, crema
DiterpenesHighVery lowModerate