Who Invented the French Press Coffee Maker?

Ever wondered who actually came up with the French press—how such a seemingly simple coffee brewer came to be so widely used today? While modern coffee lovers embrace the French press for its simplicity and rich brew, its origins stretch back far earlier than you might think, predating even common knowledge of the device by nearly a century.

The first patent for a piston-style coffee filter—a precursor to the French press—was filed in March 1852 by a French mechanic and a businessman. The device featured a metal cylinder with a plunger outfitted with a metal filter and layers of flannel. It wasn’t until the 1930s that the modern design, with a spring-loaded filter, began to take shape.

The First Piston Coffee Filter Patent

Long before the term “French press” entered the coffee lexicon, a key innovation occurred in 1852. That’s when a French mechanic and merchant were jointly awarded a patent for what they called a “piston filtering coffee device.” This early iteration included a metal container fitted with a rod and filter at the bottom, designed to separate grounds from brewed coffee using downward pressure. According to the patent, pulling the rod pushed the filter down, leaving filtered coffee “clean and clear” above the plunger. Despite its ingenuity, the design didn’t catch on widely at the time.

The Modern Design Emerges in Milan

The French press as we know it began to take form decades later. In the late 1920s, a Milan-based company registered a modified version of the original piston filter concept. By 1935, the company had refined the design with a crucial improvement: a spring-loaded disc attached to the bottom of the plunger. This kept the filter pressed evenly against the coffee bed, ensuring a more consistent extraction and preventing grounds from sneaking through. Though originally developed in Italy, the device became globally known as the French press—even though its 1852 roots are undeniably French.

How the French Press Got Its Name

In English-speaking countries, the device has been known by many names. British users traditionally called it a “cafetière,” while Americans in the 1980s often referred to it as a “French piston-type coffee maker.” Surprisingly, the term “French press” originally had nothing to do with coffee—it referred to an exercise for strengthening the arm. The first mainstream mention of the French press in the U.S. came in 1993, when The New York Times food writer Florence Fabricant described it as the preferred tool of coffee aficionados. However, she also noted a common flaw: poorly brewed French press coffee could turn out “muddy.”

Why the French Press Works So Well

The French press is a full-immersion brewing device, meaning coffee grounds steep directly in hot water. This method extracts a rich and full-bodied cup, thanks to the metal mesh filter that allows natural coffee oils and fine particles to pass through. These elements contribute to a heavier mouthfeel and more intense flavor, especially noticeable when brewing medium to dark roasts. Unlike paper filters, the metal filter doesn’t trap these oils, which is both a strength and a drawback depending on your taste preferences.

How to Brew with a French Press

To get the best results from a French press, follow these key parameters:

• Grind Size: Use a coarse grind, similar to coarse sea salt or gravel. For electric grinders like the EK43s, that’s around setting 10.5; for hand grinders, around 26. Avoid going too fine to prevent over-extraction and sludge.
• Brew Ratio: A standard starting point is 1:15—that’s 15 grams of coffee to 225 grams (or milliliters) of water. Adjust to taste from there.
• Water Temperature: Aim for around 90°C (194°F), or let boiled water cool for 2–3 minutes. A temperature-controlled kettle helps dial it in precisely.
• Brew Time: Steep for 4 minutes as a baseline. Lighter roasts may need only 3 minutes, while darker roasts can go up to 5—but watch for bitterness.

Start by adding your coarsely ground coffee to the French press, pour in hot water, and stir gently. Place the plunger on top without pressing down, let it steep, then slowly press the plunger down after 4 minutes. Pour immediately to avoid over-extraction from the settled grounds.

Recommended Grinds and Beans for French Press

Frequently Asked Questions

When was the French press first invented?

The original piston-filter coffee device, a precursor to the French press, was patented in France in March 1852. It featured a metal cylinder and a plunger with flannel filters. The modern version with a spring-loaded filter wasn’t developed until the 1930s by a Milan company.

Why is it called a French press if it was refined in Italy?

Despite its 1852 French patent, the modern French press design was refined in Italy in the 1930s. The name “French press” stuck in English-speaking countries, although it’s also commonly called a “cafetière” in the UK. The term originally referred to an arm workout, not coffee.

What’s the best grind size for a French press?

The ideal grind size is coarse—similar to gravel or coarse sea salt. For precision, aim for an EK43s electric grinder setting of 10.5 or a hand grinder setting around 26. A finer grind can lead to over-extraction and sludgy coffee.

What’s the right coffee-to-water ratio for French press?

A common starting ratio is 1:15—15 grams of coffee to 225 grams (milliliters) of water. This yields a brew strength of around 1.1–1.2% TDS. Adjust based on your taste preference for stronger or milder coffee.

How long should you brew coffee in a French press?

Most brewers recommend a steep time of 4 minutes. Lighter roasts can brew in 3 minutes, while darker roasts may go up to 5 minutes, but longer steeping risks bitterness and over-extraction.

Does the French press make oily or muddy coffee?

Yes, because it uses a metal mesh filter, the French press allows natural oils and fine coffee particles to enter the cup. This creates a richer body but can also result in a slightly murky or “muddy” appearance, as noted in a 1993 New York Times article.

Best FrontStreet Coffee Beans for French Press

For French press brewing, FrontStreet Coffee recommends its PWN Golden Mandheling, a medium-dark single origin with bold flavors of spice, dark chocolate, and caramel. Another excellent choice is Strawberry Candy Espresso, a medium roast blend offering fruity and floral notes of rose, citrus, and berries. Both beans shine in the full-immersion environment of a French press, producing rich, smooth cups. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.