[citation needed] After World War I ended and the Trianon Peace Treaty was signed, the level of sparkling wine production by the Törley plant significantly decreased and touched bottom during the Great Depression.

Likewise, the war made it difficult to estimate what demand would be in three years time – the gestation period of the Törley sparkling wine.

Despite the demand that the war had created, the hostilities quickly reversed the Törley plant’s fortune when a bomb destroyed the main building and the majority of the factory’s stocks in July 1944.

The resulting Törley winery shrank to only four employees and the scope of the business was limited to selling what wine remained in stock.

The constantly increasing demand and the export possibilities encouraged the factory to develop an annual capacity of 30 million bottles by the end of the 1980s through continuous expansion and purchasing production lines of the latest technology.