Hario Mizudashi Cold Brew Pot

A 1L glass jug with a mesh basket down the middle. Brews ready-to-drink cold coffee rather than concentrate - pour it straight over ice, no dilution, no measuring.

Roast	Grind	Coffee	Water	Time
light	coarse	16 g	200 ml	540:00
medium	coarse	16 g	200 ml	480:00
dark	coarse	15 g	200 ml	420:00

Per 200 ml cup. Makes 2–5 at a time.

What goes wrong

Using a concentrate ratio (undrinkably strong from a pot meant to be drunk neat), fine grind through a mesh basket (silt in the jug, muddy), leaving the basket in after 8 hours (keeps extracting, bitter), brewing on the counter to save time (flat, slightly fermented)

Care schedule

1 task for this machine.

Clean the cold-brew filter

Monthly

Cold brew runs for 12 to 20 hours at room temperature with the filter holding wet grounds the whole time. A filter that has been rinsed but never cleaned develops a musty note that carries straight into the concentrate.

What you need

Hot water. Washing-up liquid for mesh filters, water only for felt. A soft brush. A sealed container for the fridge if the filter is felt.

What goes wrong

Soap on a felt filter. Letting a felt filter dry out. Cleaning the vessel and forgetting the spigot. Storing everything damp and sealed, which is how the mustiness starts.

The procedure

Empty the grounds and rinse the filter under hot water straight after decanting, working from the clean side outward.

4 more steps

The full procedure is in the app, along with a reminder when this is next due. Add the Mizudashi Cold Brew Pot to your shelf and it keeps track.

Get the app

Mizudashi Cold Brew Pot

Hario Mizudashi Cold Brew Pot

What goes wrong

Care schedule

Clean the cold-brew filter

What you need

What goes wrong

The procedure

What it makes