After the discovery that grafting Vitis Vinifera onto native North American rootstocks was a solution to the phylloxera problem in Europe – and in order to allow European wine to regain its place in the first half of the 20th century – North American vines (like those used in "Uhudler") were forbidden under wine regulations across the European continent. In order to damage the reputations of wines produced from native North American varietals, it was also maintained that these wines contained a high content of methanol, and therefore were injurious to the health of the drinker. By the '70s in Austria, private drinking of the Uhudler was thus quite limited, but production for private consumption was permitted. However, prohibition led to the rising popularity of the beverage.