<P> Heavy drinkers and alcoholics were among the most affected groups during Prohibition . Those who were determined to find liquor could still do so, but those who saw their drinking habits as destructive typically had difficulty in finding the help they sought . Self - help societies had withered away along with the alcohol industry . In 1935 a new self - help group called Alcoholics Anonymous (AA) was founded . </P> <P> Prohibition had a notable effect on the alcohol brewing industry in the United States . Wine historians note that Prohibition destroyed what was a fledgling wine industry in the United States . Productive, wine - quality grapevines were replaced by lower - quality vines that grew thicker - skinned grapes, which could be more easily transported . Much of the institutional knowledge was also lost as winemakers either emigrated to other wine producing countries or left the business altogether . Distilled spirits became more popular during Prohibition . Because of its higher alcohol content in comparison to fermented wine and beer, it became common to mix and dilute the hard alcohol . </P> <P> The Volstead Act specifically allowed individual farmers to make certain wines "on the legal fiction that it was a non-intoxicating fruit - juice for home consumption", and many did so . Enterprising grape farmers produced liquid and semi-solid grape concentrates, often called "wine bricks" or "wine blocks". This demand led California grape growers to increase their land under cultivation by about 700% during the first five years of Prohibition . The grape concentrate was sold with a warning: "After dissolving the brick in a gallon of water, do not place the liquid in a jug away in the cupboard for twenty days, because then it would turn into wine". </P> <P> The Volstead Act allowed the sale of sacramental wine to priests and ministers, and allowed rabbis to approve sales of sacramental wine to individuals for Sabbath and holiday use at home . Among Jews, four rabbinical groups were approved, which led to some competition for membership, since the supervision of sacramental licenses could be used to secure donations to support a religious institution . There were known abuses in this system, with imposters or unauthorized agents using loopholes to purchase wine . </P>

What was a result of prohibition which was made a law in the united states in 1919