Orleans process

Orleans process

[¦ȯr·lē·ənz ‚prä‚ses] (microbiology) An older commercial method of vinegar production in which fermentation is carried out in a large cask in which holes have been drilled to permit the introduction of air. The cask has a spigot for the withdrawal of finished vinegar, and the bung (stopper) contains a tube so that fresh wine or other substrate can be added without disturbing the film of vinegar bacteria.