Science Buddies will be performing maintenance on Tuesday May 2, 2017 at 10pm PST for a few hours.
During this time, our site and services will not be available while we improve your future experiences.
Thank you for your patience!
Home Store Project Ideas Project Guide Ask An Expert Blog Careers Teachers Parents Students
All Activities

Make Your Own Marshmallows

Create Assignment
1 star
2 stars
3 stars
4 stars
5 stars
13 buddy reviews
by Teisha Rowland, PhD
Active Time
45 minutes to 1 hour
Total Project Time
1 to 2 days
Key Concepts
chemistry, boiling point, ratios
Adding vanilla to a bowl of whipped sugar, corn syrup, and gelatin during the marshmallow making process.


Whether you are huddled around a fireplace, or drinking hot chocolate after a day in the snow, nothing says fun quite like a marshmallow! Even its name is soft and spongy! Have you ever wondered how marshmallows are made? Long ago marshmallows were actually made from a plant, the marshmallow plant, but today we usually make them using a few key ingredients, namely gelatin, corn syrup, and sugar. In this appetizing activity you will get to explore what ratio of sugar to corn syrup produces the best-tasting and best-textured marshmallows!


Teisha Rowland, PhD, Science Buddies
This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,150 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.


  • Masking tape
  • Pen or marker
  • Ruler
  • Paper towels
  • Timer
  • 8 or 9 inch square foil cake pans or round foil pie pans (2)
  • Small sifter or strainer
  • Large mixing bowl
  • Small saucepan with lid
  • Electric mixer or beater
  • Measuring spoons
  • Measuring cups
  • Fork
  • Spatula
  • Pizza wheel or cookie cutter approximately 1 inch by 1 inch
  • Large air-tight containers or gallon-size sealable plastic bags
  • Water
  • Vegetable oil, like canola or safflower oil
  • Corn syrup, light or dark is fine (1/2 cup)
  • Powdered or confectioner's sugar
  • Plain, unflavored, ¼-ounce gelatin envelopes (2); available at grocery stores
  • Granulated sugar (1 ¼ cups)
  • Candy thermometer; it must be able to read up to 240 degrees Fahrenheit, or about 115 degrees Celsius
  • Vanilla extract
  • Taste-testing volunteers, such as friends and family!
    Photograph of the ingredients needed to make homemade marshmallows as a science activity.


Was this review helpful?
Be the first one to review this activity.
Active Time
45 minutes to 1 hour
Total Project Time
1 to 2 days
Key Concepts
chemistry, boiling point, ratios