A glass pot and reusable strainer for cold brew
The Hario Mizudashi combines a glass brewing pot with a removable mesh strainer. Coffee steeps in cold water in the refrigerator, then the strainer lifts out so the pot can be used for serving.
This overview covers the 1-litre version described in our existing equipment review. It is adapted from that source, not a hands-on testing report. Specifications and manufacturer guidance below reflect the original review; check the exact current model and supplied instructions.
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Check current price on Amazon UK →. Price and availability may change.
Why consider the Mizudashi?
The appeal is a straightforward refrigerator workflow with few components and no disposable paper filter required for the standard method. It suits someone who wants to prepare cold coffee ahead rather than brew each drink on demand.
It still needs planning, refrigerator space and thorough cleaning. A reusable strainer simplifies filtration, but does not make the brewer maintenance-free.
Source-listed features
- 1,000ml brewed capacity, also described as 8 cups.
- Heatproof glass pot.
- Reusable polyester mesh strainer.
- Removable filter for serving after extraction.
- Approximately eight-hour refrigerated extraction as a starting point.
- Source-described manufacture in Japan.
Confirm capacity and origin for the selected edition. Eight cups does not mean eight full UK mugs. Follow the actual fill markings and allow for coffee retaining water rather than assuming any recipe yields exactly one litre.
A starting workflow
The original review records Hario's starting guidance for the 1,000ml model as 80g of ground coffee and approximately eight hours in the refrigerator. Use the water quantity or fill marking in your exact model's instructions; nominal capacity alone is not a fill instruction.
- Clean and inspect the pot and strainer.
- Add the instructed coffee dose to the strainer and fit it correctly.
- Add water slowly as directed so the grounds become evenly wet, staying within the specified fill level.
- Fit the lid and place the pot securely in the refrigerator.
- Use approximately eight hours as the source-listed starting extraction time, subject to the supplied instructions.
- Remove the strainer when extraction is finished.
- Keep the finished coffee refrigerated and serve according to preference.
Record the dose, water and timing so adjustments are deliberate. Manufacturer recipes can differ by size and edition, so do not transfer the 1-litre dose automatically to a smaller pot.
Grind: do not assume very coarse is mandatory
The source records medium-fine as Hario's recommendation for the Mizudashi, rather than generic very-coarse cold-brew advice. It also records that too coarse a grind can reduce extraction while excessively fine particles can pass through the mesh.
Use that as a model-specific starting point, then adjust one variable at a time. Grinder settings are not universal, and we have not measured this filter's particle retention.
What should the coffee taste like?
The original review records Hario's description of a full-bodied, mellow result. That is a manufacturer characterisation, not a sensory result from our testing.
Cold extraction does not guarantee sweetness or remove all bitterness and acidity. Beans, roast, ratio, grind and steeping still affect the drink. Try it chilled, over ice or with milk according to preference, remembering that additions change strength.
Ready-to-drink coffee or concentrate?
Do not assume every cold-brew recipe produces concentrate. The source presents the standard Mizudashi recipe as straightforward cold-brewed coffee, with dilution optional according to taste.
If exploring a stronger recipe, respect the filter's loading and pot's fill limits. A darker appearance is not a measurement of strength or caffeine content.
Storage and batch planning
The original review records Hario's recommendation to drink the coffee within 2–3 days because oxidation can affect flavour. Treat that as recorded quality guidance, not a guarantee of food safety or a substitute for current manufacturer storage instructions.
Keep the coffee refrigerated, use clean equipment and prepare a batch you expect to use promptly. Do not assume a cold-brew batch can simply be stored for weeks. Follow the supplied guidance for storage and disposal.
Mesh versus paper filtration
The reusable mesh holds back most grounds, but fine particles may remain. It does not promise the same clarity as a paper-filtered method.
If that texture does not appeal, compare another brewing and filtration workflow rather than expecting this strainer to behave like paper. Clean the mesh promptly so oils and grounds do not build up.
Cold brew versus hot coffee served cold
The Mizudashi's workflow uses a prolonged cold-water steep. That is a different preparation method from hot brewing and then chilling or serving over ice.
If you prefer making individual drinks without an overnight wait, compare your existing hot-brewing routine or a paper-filtered brewer such as the Hario V60. This is a workflow comparison, not a claim that one method tastes universally better.
Who should consider the 1-litre model?
It is worth considering if you regularly drink cold coffee, want reusable filtration and have space for a batch in the fridge. Its simplicity may suit someone exploring cold brew without a complex multi-container system.
If you only make a small occasional drink, compare the smaller 600ml edition described in the source. Check current pricing rather than treating the original review's accessible-price positioning as a fixed fact.
Cleaning and glass care
Remove the strainer and grounds after brewing, and clean the components thoroughly according to the supplied care instructions. Prompt rinsing can help avoid dried coffee in the mesh.
Heatproof glass is not unbreakable. Inspect it for damage, avoid handling or temperature changes contrary to the instructions and do not assume dishwasher suitability or replacement-part compatibility without checking the exact model.
Our take
The Mizudashi's attraction is an easy-to-understand system: glass pot, reusable strainer and refrigerator steeping. The main trade-offs are the wait, fridge space, mesh-filter texture and care required by glass.
Choose it for planned batches of cold coffee, not instant brewing or a guarantee of sediment-free results.
Check current price on Amazon UK →. Confirm the 1-litre version and included components.
Build your coffee routine
Explore the Complete Beginner's Guide to Home Coffee for broader foundations, or develop bean choices with the Ultimate Coffee Bean Selection Guide.