Specs
Starting settings
None of the creators gave a number. The figures below come from reader submissions.
| Method | Setting | Context | Confidence | By | Source |
|---|---|---|---|---|---|
| Immersion | 15 | Mini Slim Plus, clicks. A reader-submitted figure, and the chart treats every setting as approximate | approx | Christensen | grind size chart |
| Pour-over | 12 | Mini Slim Plus, clicks. A reader-submitted figure, and the chart treats every setting as approximate | approx | Christensen | grind size chart |
| AeroPress | 7 to 11 | Mini Slim Plus, clicks. A reader-submitted figure, and the chart treats every setting as approximate | approx | Christensen | grind size chart |
| Moka | 6 | Mini Slim Plus, clicks. A reader-submitted figure, and the chart treats every setting as approximate | approx | Christensen | grind size chart |
Cup profile
- 2019: middle of the pack among budget hand grinders 0:33.
- 2024: the thinnest cup, and the most acidic and astringent, with about 14% of the grounds over 1500 µm 0:30 10:45.
Strengths
- Cheap, tough enough for travel and easy to fill 0:33.
Weaknesses
- Lots of boulders, and it's slow, hard work 0:30.
Verdict
In 2024 James Hoffmann said it does break beans up, but he wouldn't call it a good grinder. A Kingrinder P1 tastes far better for similar money 0:30 15:56.
Sources
- James Hoffmann: The Best Cheap Manual Coffee Grinder (2019-02-18)
- James Hoffmann: The KinGrinder P1: Why A Cheap Hand Grinder Has Me A Little Excited (2024-05-13)
- Asser Christensen, The Coffee Chronicler (website): Grind Size Chart & Database (2025-08-29)
Summarised in our own words from the creators' videos, with every point linked to the moment it comes from. Notchbook isn't affiliated with or endorsed by any of these creators, so please watch the originals for full context. Sources
Dialling in from here
- Sour, thin or fast? Grind finer. Why coffee tastes sour
- Bitter, dry or slow? Grind coarser. Why coffee tastes bitter
- Espresso: how to dial in. Filter: pour-over grind size.
Compare with other grinders in the grind size chart, or see every grinder.
Notchbook is a free app that remembers the setting that worked on your Hario Slim / Mini Mill for each coffee and brew method, and keeps a journal of every brew. Get it free on Google Play. The iPhone app is coming soon. More about Notchbook.