Think Twice Before You Double-Dip That Chip – Petri Dish Test Tells All

Double-Dip QuestionIf you’re a Seinfeld fan, you undoubtedly remember George Costanza’s double-dip chip episode where he takes a chip, dips it, take a bite and dips it again – the famous double-dip. The best line in the whole episode comes from the guy at the party who confronts George and says, “When you take a chip… just take one dip and end it!” When my son, Jack, saw the episode, the light bulb went on and a science fair project was born. Of course, this science-loving 5th grader isn’t the first to come up with such a test, but Jack wasn’t afraid to challenge others who’ve come up with the conclusion that the act of double-dipping your chip is no big deal. And the conclusion… you’ll have to look at the Petri Pudding picture below to see for yourself (hint: don’t double dip!)

If you’re looking for a cool science fair project, take a look at Jack’s Double-Dip Chip Challenge. Jack used Comic Life software on his iMac to present his science fair project in a more eye-catching style than the traditional tri-fold board format. This, too, was a little experiment to see if more people would stop by the table and view the project… and it worked. Please understand that he had permission to depart from the “standard” format, but the results are very cool. Download a PDF of Jack’s Double-Dip Chip Challenge.

Double-Dip Hypothesis Double-Dip Experiment-1 Double-Dip Experiment-2 Double-Dip Experiment-3 Double-Dip Discovery Double-Dip Results


Here’s what we shared with 9News viewers…


Here’s the original George Costanza clip from the double-dip chip episode…


5 replies
  1. Robert
    Robert says:

    That is so AWESOME!!!!!!!!!!!
    I never knew how much bacteria grows when you double dip. I never double dipped and I won’t do it ever. So awesome yet so disgusting.


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