How much coffee do I use in the French Press (34oz)?

For an everyday strength, 75 g of coffee to 713 mL of water, a 1:9.5 ratio. For a concentrate, 86 g to 387 mL.

How long do I steep cold brew in the French Press (34oz)?

18–22 hours in the fridge for a light roast, 14–18 for medium and 10–14 for dark. On the counter, 12–14, 9–12 and 7–9 hours.

French press

French Press (34oz): cold brew ratio and recipe

75g coffee713mL water

That is an everyday batch at 1:9.5, steeped 18–22 hours in the fridge and poured straight over ice. Holds 900 mL of water and takes up to 86 g of coffee.

Open this in Cold Brew Studio Get the iPhone app

The recipe, by strength

Each one fills this brewer as far as it honestly goes. Numbers are for a light roast steeping in the fridge.

Strength	Ratio	Coffee	Water	Steep	Makes	Drink it
Everyday	1:9.5	75 g	713 mL	18–22 h	about 2½ cups	straight over ice
Strong	1:7.5	86 g	645 mL	18–22 h	about 2¼ cups	with a splash of milk
Jet fuel	1:5.3	86 g	456 mL	18–22 h	about 2 cups	cut with a little water or milk
Concentrate	1:4.5	86 g	387 mL	18–22 h	about 2¼ cups	mixed 1:1 with water or milk

If your beans are darker

Darker roasts give up their flavor faster, so they brew at a slightly wider ratio and steep for less time.

Roast	Ratio	Coffee	Water	Steep in the fridge
Light	1:9.5	75 g	713 mL	18–22 h
Medium	1:10	72 g	720 mL	14–18 h
Dark	1:10.5	69 g	727 mL	10–14 h

Everyday strength shown.

How it goes

Grounds in.
Water over.
Stir once.
Lid on, plunger up.

Grind coarse, about the size of coarse sea salt. Find the number for your grinder.

Good to know

Needs a coarse-to-very-coarse grind (Kinder to kosher-salt size or coarser) — finer grounds slip past the metal mesh plunger screen and end up in your cup. Because there's no paper/felt filtration, sediment carryover is inherently higher than in filtered brewers, and the plunge should be slow and gentle at the end of steeping rather than a hard push, to avoid forcing fines through the mesh or disturbing the settled grounds bed. Otherwise it behaves like a plain immersion vessel: add grounds, add water, stir once, steep, then plunge and pour.

This brewer takes about 86 g of coffee at most. Stronger recipes can’t add more grounds, so they use less water instead. That is why every strength comes in under the full 900 mL.

Let the app keep track.

Cold Brew Studio sizes every batch to your French Press, tells you when it is ready, and adjusts the recipe when you rate how it tasted.

Open this in Cold Brew Studio Get the iPhone app

Free on iPhone and the web. No account needed.

Quick answers

How much coffee do I use in the French Press (34oz)?: For an everyday strength, 75 g of coffee to 713 mL of water, a 1:9.5 ratio. For a concentrate, 86 g to 387 mL.
How long do I steep cold brew in the French Press (34oz)?: 18–22 hours in the fridge for a light roast, 14–18 for medium and 10–14 for dark. On the counter, 12–14, 9–12 and 7–9 hours.