Cookies and Candies Help Explain Allergies
By: Anthony Adragna
Published: May 11, 2011

http://www.youtube.com/watch?v=RmB8_EMiSlM
A woman named the Science Goddess, aka Joanne Manaster, explains what causes the allergies in the human body. She uses a cookie and candies for the demonstration. 
According to the YouTube description, the cookie came from a food blogger named Ms. Humble at Not So Humble Pie. Though there is plenty of scientific jargon, the video is surprisingly understandable. 
Photo by: screenshot