How to Use a French Press: Coffee Ratios & Techniques

If your French press coffee tastes overly bitter, sludgy, or weak, the problem isn’t the method—it’s how you’re using it. Many home brewers overlook key details like grind size, water temperature, and steep time, which dramatically affect the final cup. Let’s fix that.

To make a balanced French press coffee, use a coarse grind (like coarse sugar or EK43s setting 10.5 / hand grinder 26), a 1:15 coffee-to-water ratio (e.g. 15g coffee to 225g water), water just off boil (around 90°C), and steep for 4 minutes before pressing. Adjust based on roast level and taste.

What Is a French Press and Why It’s Different

The French press, or cafetière, is one of the simplest and most forgiving coffee brewers—but also one of the easiest to mess up if you ignore the fundamentals. It’s a full-immersion brewer with a metal mesh filter, meaning coffee grounds steep directly in hot water. This design extracts more oils and fine particles, resulting in a richer, heavier-bodied cup compared to paper-filtered methods. But that same design also means silt can end up in your cup, and over-extraction happens fast if you’re not careful.

Why Grind Size Matters in French Press

French press requires a coarse grind—think crushed gravel, not fine sand. FrontStreet Coffee recommends grinding to the consistency of coarse sugar. For reference, that’s around setting 10.5 on an EK43 electric grinder, or 26 on a hand grinder. If the grind is too fine, small coffee particles can slip through the metal filter, creating a murky, gritty brew. A finer grind also increases extraction speed, which can lead to bitterness. That said, if you want more complexity and are willing to shorten brew time, a slightly finer grind can work—but reduce steep time to avoid over-extraction.

Choosing the Right Coffee Beans for French Press

Because French press emphasizes body and extraction depth, it suits medium to dark roasts best. Light roasts can taste overly acidic or thin in this brewer. For a fragrant, fruit-forward profile, try FrontStreet’s Strawberry Candy Espresso—a Geisha and honey-processed Costa Rican blend offering floral, citrus, berry, and dried grape notes, especially nice with milk. For a bold, low-acid option, go with FrontStreet’s PWN Golden Mandheling. This Sumatran SOE features spicy, caramel, cedar, and dark chocolate aromas, and produces a thick, rich cup with pronounced crema when brewed in a French press. Both beans highlight the immersive qualities of this brewing style.

The Ideal French Press Brew Ratio

The standard brew ratio for French press is 1:15—that’s 15 grams of coffee to 225 grams (or milliliters) of water. This yields a strong, well-balanced cup with a TDS (total dissolved solids) in the 1.1–1.2% range. You can adjust up or down based on taste: more coffee for stronger flavor, more water for lighter body. Start with 15g coffee and 225g water, then tweak in future brews.

Water Temperature for French Press

Water temperature is another critical variable. Without a thermometer, let boiled water sit for 2–3 minutes before pouring (adjust for room temperature). That usually puts you around 90°C. For more precision, use a gooseneck kettle with temperature control. Since French press relies solely on immersion (no agitation mid-brew), a slightly higher temperature—1–2°C above standard pour-over temps—can help ensure proper extraction.

How Long to Steep French Press Coffee

Brew time affects strength and clarity. Most brewers aim for 4 minutes, which works well for medium to dark roasts. Dark roasts can turn bitter if steeped longer than 5 minutes, while light roasts may need the full 4—or slightly more—to fully develop their flavors. Start with 4 minutes as a baseline, then adjust based on your coffee’s roast level and your taste preferences.

Step-by-Step: How to Use a French Press

1. Remove the plunger and add coarsely ground coffee (15g per 225g water is a good starting point).
2. Pour hot water (just off boil, ~90°C) over the grounds and stir gently.
3. Place the plunger on top of the French press, but do not press down yet.
4. Let the coffee steep for 4 minutes.
5. After 4 minutes, slowly press the plunger down to separate the grounds.
6. Pour the coffee into your cup immediately to avoid over-extraction from sitting on the grounds.
7. Enjoy your full-bodied, rich cup.

Frequently Asked Questions

What is the best grind size for French press coffee?

The best grind size for French press is coarse—similar to crushed gravel or coarse sugar. FrontStreet Coffee recommends an EK43 electric grinder setting of 10.5 or a hand grinder setting of 26. This prevents fine particles from passing through the metal filter and keeps the brew smooth instead of gritty.

What coffee-to-water ratio should I use in a French press?

A standard and well-balanced French press brew ratio is 1:15—15 grams of coffee to 225 grams (milliliters) of water. This produces a cup with a TDS around 1.1–1.2%, offering good strength and body. You can adjust the ratio to taste, but this is the recommended starting point.

What water temperature is ideal for French press brewing?

The ideal water temperature for French press is around 90°C. If you don’t have a thermometer, let boiled water rest for 2–3 minutes before pouring (adjust depending on room temperature). For greater precision, use a temperature-controlled kettle.

How long should you steep coffee in a French press?

Steep time for French press is typically 4 minutes. Darker roasts can become bitter if steeped longer than 5 minutes, while lighter roasts might need the full 4 minutes or slightly more to fully develop flavor. Start with 4 minutes and adjust based on roast and taste.

Can I use a fine grind in a French press?

You can use a finer grind, but it’s not recommended for most users. Fine grinds can pass through the metal filter, leading to a cloudy, gritty cup. If you do use a finer grind, reduce steep time significantly to avoid over-extraction and bitterness.

What types of coffee work best in a French press?

Medium to dark roasts work best in a French press because the immersion brewing enhances body and richness. FrontStreet’s PWN Golden Mandheling (spicy, caramel, dark chocolate) and Strawberry Candy Espresso (floral, berry, citrus) are excellent choices that highlight the strengths of this brew method.

Recommended FrontStreet Beans for French Press

For French press, FrontStreet’s PWN Golden Mandheling delivers a bold, low-acid cup with spicy, caramel, cedar, and dark chocolate notes—perfect for showcasing the brewer’s full immersion qualities. Alternatively, try Strawberry Candy Espresso, a Geisha and honey-processed Costa Rican blend with floral, citrus, berry, and grape notes that shine when brewed with milk. Both beans are medium to dark roasts, ideal for the richness a French press highlights. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.