Hi,
Would also be interested in this topic.
I bought home an old apple pulper from France, a few years ago. Lovely piece of 19th c iron casting. It had over a century of use on Breton cider so I didn’t clean it up until after my first pressing, by which time I hoped that the dormant yeasts had transferred to my pressing cloths, carboys and building. I think there has been a distinct improvement since then, but I’ve no way of proving that that yeast transfer was the reason, unless some microbiologist out there is looking for a PhD topic on Breton yeasts in Ireland!
Regards
Olly
PS. Was stopped by customs on way home, who were convinced I was smuggling liquor as the car was well down with the load. Turned out he was a cider maker also, so we had a great chat while no doubt the other cars thought I was on my way to an orange jump suit.