In a country like GERMANY, you will see people knocking on their table rather than clapping to applaud at the end of a master class or a really good meeting. In Beer-land clapping is reserved for theater and concerts! And talking about beer, if you want to respect German customs, don’t forget to clink glasses and say Prost! every single time you start a new beverage.

Source: http://www.sprachcaffe.com/english/magazine-article/amazing-cultural-facts-and-traditions-around-the-world-2015-08-05.htm