Noted food scientist Harold McGee takes a

Noted food scientist Harold McGee takes a look at the microbiological consequences of double dipping a chip into a bowl of dip.

Prof. Paul L. Dawson, a food microbiologist, proposed it after he saw a rerun of a 1993 “Seinfeld” show in which George Costanza is confronted at a funeral reception by Timmy, his girlfriend’s brother, after dipping the same chip twice.

• food
• haroldmcgee
• science
• seinfeld