Ortiz – Science: Time, Ice Cream

Teacher: Ortiz (mkuzmeskas@hps.holyoke.ma.us)

Assignment:

https://science.howstuffworks.com/innovation/edible-innovations/ice-cream3.htm

Five-minute Ice Cream

Photo courtesy Ed Grabianowski

There are many recipes out there for making your own ice cream at home, but did you know that you can make your own ice cream in five minutes using two Ziploc bags?

Here’s what you’ll need for this experiment:

tablespoon sugar

½ cup milk, cream, or half and half

¼ teaspoon vanilla extract (or other flavoring)

6 tablespoons salt

Enough ice to fill the gallon-sized bag halfway

1 gallon-sized Ziploc bag

1 pint-sized Ziploc bag

Photo courtesy Ed Grabianowski                              Fill the gallon-sized bag halfway with ice. Add the salt.
Fill the gallon-sized bag halfway with ice. Add the salt.

Ordinary table salt will work, but salt that has larger crystals, such as kosher salt or rock salt, will work much better. Mix the salt around in the ice and set aside.

Photo courtesy Ed Grabianowski                              Pour the milk, sugar, and vanilla extract                                            into a bowl or other container and mix.
Pour the milk, sugar, and vanilla extract into a bowl or other container and mix.
Photo courtesy Ed Grabianowski                              Carefully pour the mixture into the pint bag.
Carefully pour the mixture into the pint bag.
Photo courtesy Ed Grabianowski                              Close the bag, making sure it is completely sealed.
Close the bag, making sure it is completely sealed.
Photo courtesy Ed Grabianowski                              Put the pint bag into the gallon bag.
Make sure the pint bag gets buried in the ice. Seal the gallon bag. Shake the bags vigorously for five minutes. You might want to use a towel to hold them, since they will be very cold and slippery from condensation.
Photo courtesy Ed Grabianowski                              Remove the pint bag, open it up, and grab a spoon.

 

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