Yeast Propagator Bank (ypb) is An Innovative Project Which Offers Brewers the Opportunity To Improve Their Fermentation Process And Therefore the Final Quality Of Their Beer Through the Use Of Liquid Yeasts. Ypb Offers Varieties Of Activated Liquid Yeasts Of High Quality And In the Quantities Required By the Brewer.Yeast Propagator Bank (ypb) is An Innovative Project Which Offers Brewers the Opportunity To Improve Their Fermentation Process And Therefore the Final Quality Of Their Beer Through the Use Of Liquid Yeasts. Ypb Offers Varieties Of Activated Liquid Yeasts Of High Quality And In the Quantities Required By the Brewer.Corporación de Fomento de la Producción