What's the Ideal Coffee-to-Water Ratio for French Press? How to Make Iced Coffee with French Press? What Grind Size Should You Use?

To be honest, of all the brewing equipment out there, FrontStreet Coffee's favorite is the French press. Why? Because it's incredibly simple to operate — no precise pouring technique, no complex variable control, just an easy, delicious cup. It couldn't be more convenient (and it's very affordable, too).

That said, FrontStreet Coffee has noticed that most French press tutorials cover hot brewing, with very little on iced coffee. In this heat, compared to a rich hot cup, FrontStreet Coffee suspects everyone would rather have a refreshing, cooling glass of iced coffee. So today, FrontStreet Coffee will share how to make a rich and delicious iced coffee with a French press!

French Press Extraction Method

The French press is a full-immersion brewer! This method has two advantages. First, it tolerates error well. During immersion, as the concentrations of coffee and liquid approach equilibrium, the release of substances from the grounds slows down — so even with extreme parameters, over-extraction isn't much of a worry.

Second, it demands no precise pouring technique. Brewing good coffee is as simple as making tea: set the parameters, pour water and grounds into the press, let them steep, and when time's up, filter out a delicious cup.

Why We Need High Concentration

To make rich iced coffee in a French press, you first need to brew a pot of high-concentration hot coffee! Like pour-over iced coffee, the French press version gets rapidly chilled with ice — and as the ice cools the coffee, it keeps melting, diluting the concentration. If the coffee isn't strong enough to begin with, once the melted ice waters it down it becomes bland and thin, tasting like coffee-flavored water. So we brew high-concentration coffee to counteract the ice's dilution.

Adjusting Parameters for High Concentration

As with pour-over, brewing at high concentration means adjusting parameters. The coffee-to-water ratio is the main lever: less water raises concentration. But to prevent under-extraction, you'll also want to raise water temperature, grind finer, extend the steep, or stir to boost extraction efficiency.

Practical Brewing Guide

Next, FrontStreet Coffee demonstrates step by step how to make a rich, delicious iced coffee in a French press!

Brewing Recipe

For a sweet-tart iced coffee in the summer heat, FrontStreet Coffee recommends medium-light roast beans with deep fermentation processing — natural, honey, or anaerobic. For this demo, FrontStreet Coffee used the "FrontStreet Boundary Estate · Sidra" from our bean list. The iced coffee it makes is explosively juicy, with prominent grape, passion fruit, and apricot notes!

Extraction Parameters

• Coffee Dose: 15g (adjust according to your French press size)
• Coffee-to-Water Ratio: 1:10
• Grind Size: EK43 setting 9, with 85% retention on a #20 sieve - fine sugar texture
• Water Temperature: 100°C
• Steeping Time: 9 minutes

Steps

① First, pour all the grounds and the measured hot water into the French press, and stir with any tool for about 10 rotations. Start timing and wait four minutes.

② After four minutes, use any tool to push the floating grounds back under the water, then wait again — this time for five minutes.

③ After those five minutes, place the lid on the press and push the filter down to the coffee's surface.

④ Then take a glass filled with ice (FrontStreet Coffee used 120g) and slowly pour the coffee over it. This reduces the fine particles poured out, making the texture less rough.

When most of the coffee has been poured, give it a final stir with any tool — and enjoy your rich, delicious, refreshing, heat-beating iced coffee!

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FrontStreet Coffee Recommendation

The French press is the ultimate no-fuss brewer — add grounds, pour hot water, stir, press down, and filter. But its full-immersion design with a metal mesh means the coffee's oils come through richest, giving a heavier, fuller mouthfeel; if you dislike sediment or fine particles, it may not be for you. Because the grounds steep in hot water for a long time, light roasts can extract excess acidity that masks delicate florals and light layers — so the press theoretically suits medium to dark roasts best, which express sweetness and caramel-type flavors more clearly.

If you love fragrant, aromatic cups, choose the FrontStreet Strawberry Sugar — a Gesha blend custom-built from Costa Rican honey process and Panamanian washed Gesha, uniting Central America's finest flavor traits. Steeped in a French press, it releases rose, citrus, grape, and dried blueberry aromas, and with milk it shows off a strawberry-gummy character. For a low-acid black coffee with full, rich oils, the FrontStreet PWN Golden Mandheling is the pick: one of Asia's most famous specialty coffees, triple hand-sorted plus once machine-sorted for uniform, gleaming beans, then medium-dark roasted to reveal intense spice, caramel, cedar, and dark chocolate aromas — a mellow, full-bodied press cup with pleasing crema.

On technique, FrontStreet Coffee recommends a coarse-sugar grind — setting 10.5 on an EK43s, or 26 clicks on a C40 hand grinder, like small gravel rather than fine sand. Grind too fine and fines may slip through the metal mesh, leaving heavy sediment at the bottom of your cup; if you do want finer grounds for more layered flavor, shorten the steep to avoid over-extraction. The classic ratio is 1:15 (15g of coffee to 225g of water), yielding a concentration around 1.1-1.2% with a thicker, fuller taste — start there and adjust coffee or water next brew to taste. Water can rest 2-3 minutes off the boil (about 90°C) if you lack a thermometer, though raising it 1-2°C above your usual pour-over temperature helps compensate for the lack of stirring. Steeping time generally lands between 3 and 5 minutes: 5 may be too long for dark roasts (bitter and astringent), 3 too short for light ones — so begin with 4 minutes and tune from there.