The specific method of glacial acetic acid is to inoculate the vinegar bacteria in the diluted alcohol solution and maintain a certain temperature, place it in a ventilated place, and be able to undergo fermentation within a few months, and finally produce vinegar. The method of industrial production of vinegar accelerates the reaction process by providing sufficient oxygen.
This method has been used in commercial production, also known as the "rapid method" or "German method", because it was first applied in Germany in 1823 and hence the name. In this method, fermentation is carried out in a tower packed with wood chips or charcoal. The raw materials containing alcohol drip from the top of the tower, and fresh air naturally enters from below or forced convection. The enhanced air volume allows this process to be completed within a few weeks, greatly reducing the time for making vinegar.