Technical Periodical for Breweries, Malt Houses, the Beverage Industry and Partners: Fermentation: Combining modern process technology and traditional sour fermented beverages / Berliner Weisse: A traditional beer through the ages – part 1: How has the character of Berliner Weisse changed? / 106th Brewing and Engineering Conference – a German-French cooperation / VLB brewery conferences on four continents in 2019