Hi there – my name is Cali the Holstein Cow . I am going to explain to you how ice cream is made from my milk and tell you about all the engineers that help along the way. My breed of cows (the black and white ones you see at dairies) makes 95% of the milk used in the United States. Agricultural engineers help us make the most milk we can. We are busy!! Oh me oh my; my milk is not going to be for my calves anymore because it is going to be turned into ice cream for you to enjoy.
Right now I am having milk pumped by a machine an engineer invented. The milk is pumped into a refrigerated truck that is on its way to the ice cream factory. The civil engineer that designed the roads even has a role in making ice cream.
Now I will tell you what the food process engineers will do to my milk to turn it into ice cream. First it will be pumped into storage silos that are kept at 36 F (or 2oC). Pre-measured amounts of milk are stored in stainless steel blenders. Do you know what kind of engineers make those? Industrial engineers; they figure out the best way to use people and machines to make the ice cream. Chemical engineers measure the amount of eggs, sugar and additives that are blended with the milk for six to eight minutes and then pasteurize it to 180 F to kill any bacteria. This is a very important step done by food safety engineers to make sure the ice cream is safe to eat. Then it is chilled until it gets to 36F. After it is chilled, it sits four to eight hours so the ingredients can blend. Then flavors are added to make chocolate or strawberry or whatever flavors you like. The ice cream is frozen in a freezer kept at -40F and air is added to keep it soft – just like soft serve ice cream. Next it will go into a packaging process that plastic chemical engineers developed. They will measure how much to put in each package. It is squirted into cups and put into boxes to ship to your store for you to enjoy. I hope you see how hard we all work together to make a sweet treat that you enjoy. And enjoy you do – Americans enjoy 48 pints of ice cream per person per year. I better get back to work because it takes 12 pounds of my milk to make just one gallon of ice cream. Come on engineers; let’s get back to work.
I found my information by asking my grandfather, who is a dairy farmer and
The winners of the 2017 EngineerGirl Essay Contest have been announced! NAE President C. D. Mote, Jr. said, "Students’ devotion to protecting endangered animals is always inspiring to me, and their doing so through engineering, which is about solving problems of people and society, is doubly so. Congratulations to the winners!" Check out the link below to read the wonderful essays.