translate English to German: Surprisingly, while the basic techniques for producing good quality fruit juice had been known for many years it was not until after the Second World War that the industry really took off throughout the world.
Zwar waren die Grundtechniken der Herstellung hochwertiger Fruchtsäfte schon lange bekannt. Aber erst nach dem Zweiten Weltkrieg kam die Fruchtsaftindustrie weltweit so richtig in Fahrt.