Passover Vinegar
Another set of issues concerns Passover vinegar. Because the alcohol used to produce vinegar may be Chometz (fermented grain prohibited on Passover), one is not allowed to eat or own such vinegar on Passover. This is a serious concern for Jewish-owned companies that are Kosher certified. This would not be a concern with fermentation alcohol from corn, but a significant amount of industrial wheat alcohol is produced in the United States. (In Europe, even alcohol ostensibly derived from molasses may be adulterated with significant amounts of alcohol recovered from spoiled beer that did not make it to the pub.)