rytopa I fully understand the need to purge if changing beans. I would expect the average cafe to grind more beans in a day than a home user in a month therefore more retention, but is this coffee that is exchanged or compacted?If exchanged then it just mixes in with fresh grinds and in a cafe environment is fine. I will remove my top burrs in the next couple of days and see what is there, but unless it is a substantial amount I accept that in place of the endless faff that single dosing leads to. The Mythos is after all a fully commercial grinder and I let taste be the judge of what I am doing. I am still waiting for the first disclosed case of poisoning by stale coffee! If you made a coffee with 18 gms of very stale beans you would taste it but if you made a coffee with 18 gms of fresh coffee then added 1gm of stale I would be very surprised if the average person could taste the difference, especially if they were not told.
I stress, it is very difficult to argue with a lot of the theory that single dosing exposes us to, but I do question exactly how much difference it really makes
