The milk I got came into a plastic bag see picture. As far as milk production is concerned the process takes approximately 11 steps! First the milk is harvested from the cows into a refrigerated tank from there a refrigerated truck collects the milk and deposits at a milk processing plant. The milk is put into a machine that cleans the milk and separate it depending on how fat it is. Depending on the type of milk being produced a certain amount of fat is kept and the rest is used for cream and butter. The milk is then fortified with vitamins and pasteurized with heat to kill bacteria. Once pasteurized most milks are homogenized meaning the fat is broken down into smaller particles so that it doesn’t float to the top and states distributed evenly throughout the milk. It is then cooled packaged and stored in refrigerated spaces where it will later be distributed by a refrigerated truck. Considering how many times the milk is transported and the fact that the temperature is regulated throughout the cleaning packaging and transportation process milk production uses considerable energy.

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Sources:

http://www.madehow.com/Volume-4/Milk.html