SankePankey said:Marbles have been used for filtering alcohol in the history of fermentation, but in a different way. Cleaned marbles were used to filter out air so to speak in a container containing wine, preventing oxidation by just displacing the liquid bringing the level into the neck of the bottle and close to the top. Sort of like an ancient version of the vacuvin pumps. Useless info, but oddly pertinent to the discussion.
You know, that's some good info. I don't have a vacuum pump, now I just need to find some lead free marbles