Lyofast MW 039 R consists of undefined strains of Lactococcus lactis ssp. lactis, Lactococcus lactis ssp. cremoris and selected strains of Lactococcus lactis ssp. lactis biovar diacetylactis, and Leuconostoc ssp.. Lyofast MW 039 R ensures a uniform and controlled production of sour cream like Smetana, fermented milk, fresh cheese, soft cheese, and semi-hard cheese. Lyofast MW 039 R has fast citrate fermentation.