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deleted-
Mignons take a long time to run in, they clump a lot for the first few dozen kilos which adds to the retention. That’s probably a couple of years in most domestic situations but then they’re great. If your local roaster has any QC fail stuff to get rid of it’s worth running a few kilos through to run it in.
Stevethecoffee
How bad can retention be in some grinders? I've only owned two low to mid end grinders and both had a little bit of retention but easily less than one gram. On our Sage probably closer to quarter of a gram. Are there grinders out there that dump a tablespoon of previous grind out?