It’s the worst cross-contamination version of double-dipping.
A restaurant in Norcross, Georgia, had raw seafood and ready-to-eat foods being dipped into the same tempura batter. Various coolers had food items stored improperly, with raw meats and seafood next to washed vegetables and other ready-to-eat items, putting the food at risk of cross-contamination.
My Kitchen Rules is Australian food porn.
According to Rebekah Carter of the Australian Institute of Food Safety, social media was just one of the locations to receive an outpouring of disgusted comments recently after mother-daughter duo Anna and Gina demonstrated a number of food safety faux pas on “My Kitchen Rules.”
The first couple to be eliminated, Anna and Gina from Canberra made a dramatic exit from the popular television show. However, the response that followed their departure was even more striking.
Fans of the reality TV cooking contest flocked to the radio and grabbed their keyboards to express comments suggesting that the show’s contestants were in desperate need of some “lessons in kitchen hygiene”.
Alongside rejecting gloves for her Band-Aid covered fingers, viewers reeled at the image of contestant Gina double-dipping her spoon in the soup. One fan called into the Kyle and Jackie O breakfast show with the phrase “would you like some saliva with that?”
Meanwhile, the official Facebook page for My Kitchen Rules was over-run with queasy comments. Kelly Cockshell wrote “I’m sorry, but you don’t put the spoon back in after you taste test that is gross!!”
Kayla Dean commented “All teams before they start need to go through a health and hygiene course.”
And Robyn Champion agreed, saying “OMG no wonder the ragout tastes bad… did you see all that double dipping going on! Send them home!!!”
In a 1993 episode of the television series, Seinfeld, George Costanza was confronted at a funeral reception by Timmy, his girlfriend’s brother, after dipping the same chip into the dip after taking a bite.
“Did, did you just double dip that chip?” Timmy asks incredulously, later objecting, “That’s like putting your whole mouth right in the dip!” Finally George retorts, “You dip the way you want to dip, I’ll dip the way I want to dip,” and aims another used chip at the bowl. Timmy tries to take it away, and the scene ends as they wrestle for it.
In 2008, food microbiologist Paul L. Dawson at Clemson University oversaw an experiment in which undergraduates found on average, that three-to-six double dips transferred about 10,000 bacteria from the eater’s mouth to the remaining dip.
Each cracker picked up between one and two grams of dip. That means that sporadic double dipping in a cup of dip would transfer at least 50 to 100 bacteria from one mouth to another with every bite.
In anticipation of much dipping during Sunday’s Super Bowl, the Is It True video series af the Wall Street Journal’s Health Blog presents this animation, and concludes it’s not like putting your whole mouth in the dip but could be compared to sharing a kiss with your fellow dippers.
A 1993 episode of the television show, Seinfeld, landed the term double-dipping into popular culture when George Costanza is confronted at a funeral reception by Timmy, his girlfriend’s brother, after dipping the same chip twice.
“Did, did you just double dip that chip?” Timmy asks incredulously, later objecting, “That’s like putting your whole mouth right in the dip!” Finally George retorts, “You dip the way you want to dip, I’ll dip the way I want to 
dip,” and aims another used chip at the bowl. Timmy tries to take it away, and the scene ends as they wrestle for it.
Peter Mehlman, a veteran “Seinfeld” writer, wrote the episode, and said,
"At the time I was living in Los Angeles, in Venice. There was a party on one of the canals, and apparently someone dipped twice with the same chip. And a woman flipped out. ‘You just dipped twice! How could you do that? Now all your germs are in there!’ I thought, this is just too good not to use on the show.”
CNNGo.com asks this morning, “would you think twice about diving — chopsticks first — twice back into the communal service dishes on just about every table in Shanghai?
“… in China we all ‘double dip.’ If you say you don’t, you’ve never been to a good Chinese meal in Shanghai.
“In restaurants when we share plates of food, almost everyone takes more than a bite with their own personal chopsticks from the shared plates. That means our saliva-covered chopsticks are carrying germs back and forth all meal-long, making for one big shared germ fest on all the plates.
“However, few people, Chinese or Western, seem to view double dipped chopsticks in the same dubious light as a double-dipped chip.”
Lisa Wu, a student at Shanghai International Studies University, said,
“When I was young, my parents would only mention this issue when they caught a cold. They’d keep a separate bowl and use a pair of new chopsticks to pick out some food for themselves. But the rest of the time, we never really thought twice about sharing.”
Wu says that right after the SARS epidemic, there was a public debate on whether people should adapt Western ways of eating, with separate individual servings or at least the use of “public chopsticks” or gongkuai.
Public chopsticks are chopsticks provided for general serving, like a serving spoon, and not used for eating. However, Wu says when the SARS crisis 
petered out, so did the chopstick discussion.
Huang Juemin, a pediatrician at Shanghai United Family Hospital, said,
“As a teenager growing up in Shanghai in late 1980s I remember vividly the Hepatitis A outbreak. For a while, people challenged the custom of ‘double dipping’ and started using gongkuai — public chopsticks.”
After discussing the double dipping issue with her internal medicine colleagues, Dr. Huang says they all believed that “definitely there is an increased risk for H. Pylori and Hepatitis A, if not Hepatitis B infections. … I think we should make an effort to use public chopsticks from the public health standpoint.”