Just a video explanation of how I use to Q-ball to have zero grind retention in the Mazzer Mini E doserless grinder. Not for most I guess but if you're OCD like me on stale grind then might be something to consider if you have a doserless grinder.
Grind retention Mazzer Mini E grinder Type A doserless solution - YouTube
Grind retention Mazzer Mini E grinder Type A doserless solution - YouTube

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