Food Beverages and Catering Union Tags: Trade Union.The Food Beverages and Catering Union (German: Gewerkschaft Nahrung-Genuss-Gaststätten NGG) is a trade union in Germany. It has a membership of 237000 and is one of eight industrial affiliates of the German Confederation of Trade Unions. thumbnail affiliation Confederation of German Trade Unions country Germany Learn more... Loading...