Compléter Ice cream manufacturing: From milk to ice creamVersion en ligne Fill in the blank ice cream manufacturing process par Petra Priest 1 After , the milk and sugar mixture is turned into ice cream . The mixture is pumped through a , which drops the temperature of the mixture to about 2 degrees Celsius . The mixture is then left for at least hours in a storage tank to " age " . If the mixture is not left to , it will not freeze well . Flavours and food colouring are then added to the mixture before it is . The mixture is then frozen at a temperature of about - 30 degrees Celsius . Metal stir the mixture as it freezes . This mixing process whips into the mixture to give it a texture .