In today's Austin American Statesman, Jane Greig wrote an article about summer myths. One of them being about whether you can fry an egg on the sidewalk.
This is what her expert had to say:
"The American Egg Board has not heard of anyone who has had success doing this, says Elisa Maloberti, consumer information coordinator. The white of the egg coagulates (cooks) between 144 degrees and 149 degrees, and the yolk cooks at higher temperatures: 149 degrees to 158 degrees. The heat of summer might make you feel as if an egg could fry on the sidewalk, but the temperature would have to be concentrated to make that happen, Maloberti adds."
Here I am, American Egg Board. I have successfully fried an egg on the sidewalk. One summer I was visiting my grandfather and the witch he married (not my grandmother) in Andrews, Texas. My cousins and I decided it was so hot that we could fry an egg on the sidewalk. The witch gave us the egg and we went out front to fry it. Boy, did that egg fry. And even worse it made a HUGE mess. We also learned that fried eggs really stick to the sidewalk, too. That witch was so mad that she stood over us until we cleaned up every bit of that egg. So, my advice is that if you try to fry an egg on the sidewalk spray some Pam on it first.