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Science Says Double-dipping is Gross, Unhygienic

Posted March 30, 2019 12:00 AM by M-ReeD
Pathfinder Tags: food Hygiene

Have you ever attended a party only to eschew the offered fruit and vegetable platter dip because you can’t trust that the attendees knew better than to place the carrot that they already took a bite of back into the ranch dressing?

Well then hello there, spirit animal!

If you have ever seen it, ever been repulsed by it, or ever momentarily imagined smacking the dip vehicle (be it chip, pretzel, vegetable or fruit) from the offender’s hand’s before they make repeated contact with the dip, rest assured! A food scientist is now confirming what we have long suspected: double-dipping food is unhygienic.

To prove this, Clemson University Professor Paul Dawson conducted an experiment using chocolate dip, cheese dip, salsa and crackers. Professor Dawson looked at the bacteria left behind after a person had eaten the variety of dips and subsequently placed the dip vehicle, in this case, the cracker, back into the dip.

“I expected there to be not really much bacteria transfer [after the first bite] because of the small surface area on a cracker or chip when you bite it,” Professor Dawson said.

“But we actually found there were 1,000 more bacteria per millilitre in the dip from when you bit the chip than when you didn’t. That’s a significant amount. That’s more like a person-to-person transfer like the common cold and other contagious diseases rather than the typical food borne illness like E.coli and salmonella.”

However, not everyone believes that the issue of double-dipping is an earth-shattering one. Cathy Moir, a CSIRO food safety specialist argued that there are far worse unhygienic behaviors to participate in, namely not washing hands following a restroom visit.

Dawson’s work is detailed in the book, "Did You Just Eat That?"

Image source:

Gina / CC BY 2.0

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#1

Re: Science Says Double-dipping is Gross, Unhygienic

03/30/2019 1:03 AM

I only have one question.....Do You Have a Cat???

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#2

Re: Science Says Double-dipping is Gross, Unhygienic

03/31/2019 12:11 AM

One only has to go into ANY buffet restaurant and see just how the widespread practice of double dipping is prevalent.

Add on top of that is how many men and women don't wash their hands after using the toilet.

The university of Michigan conducted a study in which they found on average, almost 95 % of people did not wash after using the toilet with men having higher numbers than women.

In a study conducted by the centers for disease control, people were sickened by e. coli bacteria and other germs more than 50% of the time.

Yuck, Yuck and Double Yuck !

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#4
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Re: Science Says Double-dipping is Gross, Unhygienic

03/31/2019 5:51 AM

With reference to the washing of hands after using the toilet have you ever thought about the button press, unless you have a fancy touchless flush activator, once pushed you may have left your own little germ package for the next flusher and picked up a package from the last user.

I wonder how much the grant was to investigate the double dipper.

What about the tongs to load food onto your plate, it could have its own little surprise package especially if a no hands washer has just loaded their plate.

Every body needs contact with germs else their immune system goes to sleep so double dip away like our politicians are always double dipping.

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#3

Re: Science Says Double-dipping is Gross, Unhygienic

03/31/2019 5:00 AM

C'mon...
1000 more bacteria per millilitre.
Totally meaningless if they don't say how many were in the other sample! If it was 1,000,000 then its hardly significant.
If you actually think about it, double dipping is more hygienic than, say, dipping one end of a bread stick, then turning it round and dipping the other, as your mouth is probably cleaner than you hand!
Basic food hygiene is essential practice, but this germ phobia and selling endless antibacterials and disinfectants is likely more of a problem than a solution.
Presumably the people who did this study, never got as far as kissing or oral sex?
The food poisoning cases may well have been caused back in the preparation or storage!
In a restaurant situation I would agree... but I'd have thought dips etc were usually placed such that they would be spooned onto the plate not dipped (only speaking for UK)
Del

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Re: Science Says Double-dipping is Gross, Unhygienic

03/31/2019 10:27 AM

Kissing ?

See :

You tube.

You only live twice / The things I do for England

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Re: Science Says Double-dipping is Gross, Unhygienic

03/31/2019 11:06 AM

I might add, no identification of the bacteria as being harmful or not...we eat bacteria all the time, it's the ones that cause gastric distress that are of concern, which are about 6 different types....not only does there need to be a certain kind, there needs to be a sufficient quantity to cause a problem....otherwise bon appétit

I would be more concerned about viruses...

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Re: Science Says Double-dipping is Gross, Unhygienic

04/01/2019 12:19 AM

Improperly prepared salads at restaurants have had me running to the loo within the hour more times than I can count. Even at 'nice' restaurants. Not sure if it is because of inadequate washing of the produce, poor storage, or cross-contamination in the preparation area. I have never had this problem at home. And interestingly enough, I have eaten dozens of salads at McD's and never had a problem. While people's opinions of McD's food will run the scale, I will say that their hygiene is generally top-notch.

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Re: Science Says Double-dipping is Gross, Unhygienic

04/01/2019 5:24 AM

Exactly! Vastly more worrying than double dipping.
Del

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Re: Science Says Double-dipping is Gross, Unhygienic

04/01/2019 10:24 AM

Yeah. "We" have become so scared of germs. I wonder how many people have died because they went someplace where people were double dipping. I would think that people would be passing away right and left from eating at buffets. Maybe that is where people get that flesh eating - bacteria. When was the last person who died from the flesh eating stuff?

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Re: Science Says Double-dipping is Gross, Unhygienic

04/04/2019 10:21 PM

They might mean 1000 more different species!

Yuck!

btw: I love double dipping! Oberservative people avoid the dip you targeted and its more left for you!

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Re: Science Says Double-dipping is Gross, Unhygienic

03/31/2019 9:01 AM

Reminds Me of a Jerry Seinfeld episode where George Costanza goes to a funeral

with His girl friend and the girlfriends brother catches George double dipping a potato chip. Things get pretty nasty after that. Very funny.

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Re: Science Says Double-dipping is Gross, Unhygienic

04/01/2019 9:51 AM

I'm fascinated by the use of roasted Brussels sprouts -- one of my absolute favorite vegetables -- as dippers. I'll remember that next time I have some leftovers to serve cold. And if I'm the only one who eats them I can double-dip as much as I like!

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