Ludwig Narziß was Professor at the Chair for Brewing Technology I at the TU Munich, Freising-Weihenstephan, Germany, until his retirement in 1992. He is renowned as having been one of the world's leading experts in malting and brewing science. He published frequently on a broad range of topics over many years and remained active in the industry until his passing in December of 2022. Werner Back succeeded Ludwig Narziss as Professor of Brewing Technology I at the TU Munich, Freising-Weihenstephan, Germany. He is likewise a well-respected and widely published author on malting and brewing science and technology. Martina Gastl is Professor for Brewing Technology and Director of the Research Center Weihenstephan for Brewing and Food Quality, TU Munich, Freising-Weihenstephan, Germany. Martin Zarnkow leads the R&D department at the Research Center Weihenstephan for Brewing and Food Quality, TU Munich, Freising-Weihenstephan, Germany.