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My Mayo Exploded!

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This jar of exploding mayonnaise serves as a reminder why one should pay attention to the "sell-by" dates on the sides of packages. Submitter Doug writes:

Yesterday my mother went to open a new jar of Stop and Shop light mayonnaise. After she unscrewed the cap the contents started bubbling out from under the seal. She removed the seal and the result is what you see here. We took it back to the store, where they apologized and replaced it with the non-exploding kind.
You can see in the picture that the jar is six months past its sell-by date. UPDATE: Oops, we're stupid, that's the year 2008. Damn, there's no reason for this mayo to go unless maybe that's a misprint. Why would it explode, though? Bacteria get inside and cause a gaseous buildup? We're betting heavy on "compromised seal." Full-size pics inside...

mayobuild.jpg
tallmayo.jpgOMG MAYO GO BOOM!

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warf0x0r
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Mayonaise, BLECH!!!!

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Looks like it's March 31 '08, not '07....

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Looks to me like the "sell by" date was march 31, 08.

Am I misreading?

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If those pictures don't make you stop buying Mayonaise, I don't know what will.

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March 31st of '08? That's not out of date. I'm even more mystified as to how this could happen.

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hmmm, it doesn't look like this was past its expiration date. From the photo I'm reading the "best buy" date was "March 31, 08". So the mystery deepens!

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Oh that makes me just want to puke. I don't like mayonnaise already, but that is just disgusting.

Barf!

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Hey Ben,

Thanks for posting all those yummy-looking photos right before lunchtime. I'll definitely lose weight if I don't have an appetite. ;-)

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Yea, that's '08 on there unless I am missing something.

It wouldn't have surprised me if it was an '07 though. When I worked in a grocery store, I would spend hours in my section(meat) trying to get all the expired stuff off the shelfs, and would still miss stuff. Always be mindful of the dates. Most stores do a pretty good job, but no one is perfect.

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If you must have mayo, make your own. Throw 1 1/2 tablespoons of lemon juice and an egg into your blender at the LOWEST possible speed, then drizzle in a stream of olive oil AS SLOWLY as you possibly can (if you add it too quickly, you will break the emulsion and end up with something completely disgusting). Can't really say how much oil to use other than you will be able to tell when you've added enough --- it will look like mayonnaise. At this point, add salt + pepper + whatever else you want (season to taste). I like cilantro in mine.

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This wouldn't have happened if she just read the label. I can see right there under "Contains Soy, Eggs" it says "Contents may explode. When opening, hold jar away from face."

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Bonus - 20% more mayo for free!

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That's not mayo, that's "The Stuff".

[www.imdb.com]

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I'm voting for bacterial contamination. Not sure what botulism looks like, and I'd be surprised if it had such a, uh, violent manisfestation. But definitely not anything I'd risk spreading on my sammich.

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Mayonaise is great but it's so much better if you just make it yourself. The store bought stuff tastes so awful in comparison. Of course the flip side is that because its composed of almost 100% fat it basically goes rancid very quickly.

I think even store bought mayonaise goes bad fairly quickly on a relative basis compared to other products like ketchup or mustard.

I'm not sure as to why the jar would be bubbling since the article states that it was a new jar not a previously opened one that had been sitting in the fridge for some time. I would expect it to begin separating not bubbing over if it was expired.

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I'm not surprised either. When I worked in a grocery store, I noticed a great deal of the luncheon meats from a particular vendor were all out of date. After notifying my manager, she said we couldn't do anything about it because "it is a vendor stocked item, the best we can do is notify the vendor.It is up to them if they want to replace it or not." Vendor didn't pull the expired meat (now about 3 weeks past date), and the store ended up pulling it anyways.

I guess that's a commissary for you, though.

This is interesting though. As in, disgusting interesting. Since it isn't even past its sell by date, why would it explode? Will we be seeing a massive mayo recall coming up? Stay tuned...

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You'd think that simply emulsifying eggs and oil together could only turn out well, but somehow two such wonderful ingredients result in something so foul as mayonnaise.


I'm not a fan.

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Just because the bottle is new, doesn't mean the seal been compromised at some point. Obviously no one here has taken a home ec class.

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i find it hilarious this got posted under the preface that we should check sell by dates, when the picture clearly shows 08.

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Does this mean they are going to start checking condiment jars at the airport now?

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@zouxou: I tried for three years in highschool to get into the home ec class and every year they said 'no.' Damnit...

Anyways, we don't know for sure if the seal was compromised because of the gas buildup, or if it caused it. Either is possible, and the company would probably have to inspect or something to ensure that this did not happen to other jars from the same lot. The fact they were able to trade for a non-exploding jar is promising, though.

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Maybe the date on the label was referring to 1908?

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Just please don't feed that homemade mayo to pregnant ladies or those with compromised immune systems. Either that or make sure you buy pasturized eggs.

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@Namilia: It was a tongue-in-cheek comment as I know that most schools no longer even offer it. Since the problem appears to be limited to one jar, I would say it has to do with the seal.

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Maybe the explosion is a result of anaerobic bacterial fermentation inside the mayo jar (assuming the jar was properly sealed the first time)? Damn, I don't think I can have mayo with my food for a while now...

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@hillsrovey: 120% mayo in a 100% jar. maybe that extra 20% caused the explosion.

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@Chris Vee:

I guess pregnant women should avoid the unpasteurized eggs, just like they should avoid everything that is unpasteurized just to be on the safe side.

Then again, what good did pasteurization do for Stop and Shop's Light Mayonnaise? If we had to pick, I'd still give a pregnant woman my homemade mayo before giving her the stuff pictured above :-)

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Those bananas in the background aren't looking none too good either.

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@zouxou: I figured as much, and its unfortunate most schools don't. Mine limited it to only 9th-11th graders, and had very limited availability. And good point..I really hope that is the only can with a compromised seal too, heh.

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My guess: pop rocks. You can't mix them with mayo.

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If you ever want to see what can happen to food, volunteer at a big food bank in the salvage room sometime. Nothing like an assembly line of soon-to-explode jars and cans.

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I learned the hard way that mayo does not take well to freezers, when our fridge broke and we were frantically tossing all the food into the larger freezer in our house to preserve it a jar of mayo got tossed into the freezer, it didn't look too pretty when it came out, so we tossed it. It wasn't a full jar so I cannot comment on the explosion factor but my guess is that this jar was frozen at some point and possibly thawed before it was opened, and when it was opened it exploded. The mayo coming from this jar doesn't look quite right either. The mayo could have gotten frozen if a customer decided they didn't want it and ditched it in a freezer in the frozen section.

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It's "Light" Mayonaise. This one's really, really light...

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lets not leave mayo packets exempt from this either. they will explode through the wrapper.

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That's disgusting. Imagine the mess!

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Gosh that's almost enough to make me stop eating Mayo. Almost. I'll forget about it by tomorrow though.

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@olderbudwizer: Bananas actually taste a LOT better when they're brown like that due to the natural sugars releasing. Sure, they don't look pretty and yellow, but they taste awesome and sweet.

And that mayo looks nasty. D: It's like...a cloud of disgustingness. However, I learned how to make homemade "mayo" from this page. Rock on.

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Cool. Volcanic Mayo. What will they think of next. Would go great with that purple ketchup Heinz makes.
Pass the bread please.

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@warf0x0r: exactly!! mayo is NASTY.

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Give me a spoon and I'll eat the rest like pudding...

Or maybe dip bread in?

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There are very few things I won't eat, but mayo, Twinkies, and beef liver are high on the list. Mayo and Twinkies for opposite reasons, of course: one goes bad without warning, the other is so full of preservatives it's likely to retain its form until the next Ice Age. Neither being especially tasty or good for you, I'll pass. Food should be ONE or the other.

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At least it didn't start crawling (oozing?) across the table and try to eat someone.

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@Ryuuie:

I resent your use of quotes when you talk about homemade mayo. I guess technically it is a type of aioli since it uses the egg white (although it would need garlic to really be aioli).

Or could you be implying that it isn't really mayonnaise since it isn't that processed garbage?

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@dlab: I also make my mayo with cilantro. Aww yeah!

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@dlab: Because it's technically a type of aioli. Also, the other reason too. When most people think of mayonnaise, they think of the horrid processed crap.

Maybe it's just me and my weird way of naming things, but I'd rather call it aioli than "mayo". Would you really want your hard-earned homemade concoction to be associated with something disgusting as mayonnaise?

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I understand a brown banana is sweeter, but is it really safe to leave a half eaten one to lay out? If so, the fruit flies will feast tonight.

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@jaffa-cake: Yea, I'd probably have the half-eaten banana wrapped up in something. The rest are okay though.

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I guess that's what happens when you buy off-brand food. Yuck!
I had a zit that did that once.