Edible Science: Make color changing Sugar Cookies

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Color Changing Sugar Cookies are not only a fun science project but yummy to eat. It was so cool seeing the dough change colors right before our eyes.  I have to honest here, they are no the best cookies I have ever had but keep in mind we are adding cabbage juice to the mixture.  Please feel free to adjust this recipe to your taste buds.  I started with a sugar cookie recipe and edited it for the cabbage juice.

Color Changing Cookies
Ingredients
  • Make cabbage juice
  • Half head of Red or purple cabbage
  • 4 cups water
  • pot
  • Make cookies
  • ¾ cups sugar
  • ½ cups butter
  • 3 TBPS egg whites
  • 1½ cups flour
  • ½ TSP baking powder
  • ½ TSP baking soda
  • Bowl 1
  • 2 TSP cabbage juice
  • 4 TSP vanilla
  • 4 TSP lemon juice
  • Bowl 2
  • 3 TSP cabbage juice
  • 3 TSP maple syrup
Instructions
  1. Make the color changing part or cabbage juice first
  2. Have your helper cut up half the head of cabbage into small chunks
  3. Bring water to boil, add the cabbage, and boil for 5 minutes
  4. Use a slotted spoon to remove the cabbage chunks - let water boil down to about ½ cup, the liquid should be a dark purple
  5. Now make the Cookies
  6. Preheat oven to 350 degrees
  7. Make cookies dough by combining sugar, the butter, and egg whites and mix together with blender
  8. In a sifter add flour, baking soda, and baking powder into a sifter and sift into the mixture
  9. mix with a blender
  10. the mixture should be like small chunks
  11. separate cookie mixture into 2 bowls
  12. in clear bowl 1 - add 3 tsp cabbage juice, 3 tsp maple syrup - add to bowl 1 cookie mixture
  13. bowl 2 - add 2 tsp cabbage juice, 4 tsp lemon juice, 3 tsp vanilla - add to bowl 2 cookie mixture
  14. fun add sprinkles to bowl 1 and a little sugar to bowl 2
  15. cook cookies for 10-12 minutes



What we discovered:

img_5132We found that sugar cookie works the best for texture and taste.  I had to taste the batch of cookies because the cabbage really does taste awful, but please be cautious it does have raw eggs in the mixture.  

img_5098Extra Fun – we made two batches of cabbage juice and ended up with about 1 1/2 cups cabbage juice.  With the leftover cabbage juice, we put  2 TBSP cabbage juice in several clear cups.  Then added egg white, maple syrup, vanilla, lemon juice, and water.  We added a paper towel to each mixture and let it soak up the mixture. After a few minutes, we took out the paper towel and let it dry on a table outside.  Then we could see if the mixture was a base or acid.

Science behind it:

img_5065These cookies will not taste like cabbage but be colored by the cabbage juice.  The pigment of the cabbage juice reflects purple because of its shape. When the mixture is mixed with an acid like lemon or vanilla a chemical reaction happens and changes the shape of pigment molecule. The new shape reflects pink light.

 

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Tools we used from Amazon:
Nesting Mixing bowls: http://amzn.to/2gFXxYH
Micky Measuring Cups: http://amzn.to/2h7uG07
Mini Kitchen Aid: http://amzn.to/2h9ROh7
Kids Cheif Hat: http://amzn.to/2h7upu3

About Chrissie

Follow our crazy journey across America as we visit roadside oddities, historical land marks and beautiful landscapes. I have ton of ideas and review educational products that will help you get the most on your home school adventure. We are an Unschool family that believes the world is our classroom and is teaching our children to self direct their education to a better future.