At 01 fat pure milk sterilised skimmed milk is virtually fat free skimmed sterilised milk tastes just like milk and has the sweet undertones that are associated with the sterilisation process sterilised milk has a long shelf life and is great kept in a cupboard unopened until you are ready to use it its simply fresh milk that has been heat treated to 140 degrees celcius to destroy the micro organisms that otherwise allow milk to deteriorate once the milk has been opened it should be tre