Immersion brewer
Hario Mizudashi Cold Brew Pot (1000ml): ratio and recipe
99g coffee941mL water
That is an everyday batch at 1:9.5, steeped 18–22 hours in the fridge and poured straight over ice. Holds 1,150 mL of water and takes up to 99 g of coffee.
The maker’s own recipe
1:14.480 g coffee1,150 mL watersteep 8 h
This is the recipe Hario publishes for this brewer, and it is what Cold Brew Studio opens with when you pick it. It makes about 4¼ cups, best straight over ice.
How the maker does it
Put 80g of freshly ground, dark-roasted coffee into the mesh strainer (Hario recommends medium-fine grounds: coarse grind reduces extraction efficiency and gives a weak brew, while fine grind passes through the mesh and makes the coffee grainy). Set the strainer in the pot, then slowly pour in small amounts of water so all grounds are evenly wetted, filling to the band mark on the handle — approx. 1150ml (8 cups) total. Gently stir with a spoon, fit the lid, and refrigerate; extraction takes about 8 hours (adjust to taste on repeat brews). Remove the strainer when done — leaving it in makes the coffee bitter. Note: finished brewed volume differs from water added because the grounds absorb some water during brewing.
Source: global.hario.com
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 | 99 g | 941 mL | 18–22 h | about 3¼ cups | straight over ice |
| Strong | 1:7.5 | 99 g | 743 mL | 18–22 h | about 2¼ cups | with a splash of milk |
| Jet fuel | 1:5.3 | 99 g | 525 mL | 18–22 h | about 2 cups | cut with a little water or milk |
| Concentrate | 1:4.5 | 99 g | 446 mL | 18–22 h | about 2 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 | 99 g | 941 mL | 18–22 h |
| Medium | 1:10 | 99 g | 990 mL | 14–18 h |
| Dark | 1:10.5 | 99 g | 1,040 mL | 10–14 h |
Everyday strength shown.
How it goes
- Grounds in the basket.
- Water over, slowly.
- Stir once.
- Lid on, into the fridge.
Grind coarse, about the size of coarse sea salt. Find the number for your grinder.
Good to know
Hario's fine mesh strainer basket wants a medium-fine grind rather than the coarse grind typical of immersion cold brew — coarse under-extracts (thin/weak brew) while fine grounds leak through the mesh into the cup. Steep time is also much shorter than most immersion brewers (about 8h vs the usual 12-24h). Fill water to about 1150ml even though the pot is named/sized for 1000ml of finished coffee, since the grounds soak up roughly 150ml during the brew.
This brewer takes about 99 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 1,150 mL.
Let the app keep track.
Cold Brew Studio sizes every batch to your Hario Mizudashi Cold Brew Pot, tells you when it is ready, and adjusts the recipe when you rate how it tasted.
Free on iPhone and the web. No account needed.
Quick answers
- How much coffee do I use in the Hario Mizudashi Cold Brew Pot (1000ml)?
- For an everyday strength, 99 g of coffee to 941 mL of water, a 1:9.5 ratio. For a concentrate, 99 g to 446 mL.
- How long do I steep cold brew in the Hario Mizudashi Cold Brew Pot (1000ml)?
- 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.
- What ratio does the maker recommend for the Hario Mizudashi Cold Brew Pot (1000ml)?
- 1:14.4, which is 80 g of coffee to 1,150 mL of water, steeped 8 hours.