Mesophilic (MW3) is a freeze dried culture, which contain special strains of Lactococcus lactis subsp. cremoris and Lactococcus lactis subsp. lactis.
Each sachet contains enough culture for 4 L of milk. Activity = 2.4 U.
This culture is shelf stable for 8 months. However, we suggest storing cultures in the freezer when you get them in order to prolong the life of the culture