As soon as it comes out of the cow, the milk is cooled. After the farmer has milked the cows, the milk gets cooled in a machine. This stops it going off. Then the tanker keeps it cold, while it is transported to the dairy factory.
The milk goes through the separator machine then the, milk and cream are separated. The milk gets separated so we can make different types of milk. The milk you can make is dark blue light blue and green, the dark blue has medium of cream, the light blue has some and the green has a little bit .If the milk is not separated the milk will be yucky.
link by Rosie world
By heating the milk on 72 degrees, Bacteria is killed by pasteurisation the milk. It goes throw the pasteurisation to make it kill the germs in the milk, so everyone knows it good to drink. The pasteurisation machine goes to 72 degrees to 3 degrees.
The milk is finally piped into its different bottles. Next time you have a glass, think about all the steps it took to produce it.