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Is Milk's Taste Changing?

Late last year (2008), my gal started and I both started to notice that various milk brands here in Denver were starting to taste, for lack of a better word, disgusting. At first, she noticed in Archer Farms I bought from Target. Then she noticed that King Sooper (Kroger's) store brand started to have it. She switched to Viva (which didn't have it), and I switched to Horizon (organic). Then even Horizon started to taste that way also, and now, finally, she's reporting that Viva also tastes disgusting.

It is, quite frankly, a strong and unpleasant taste, which is a bit like rotten milk, but with a sort of sour plastic or chemical overtone. It leaves a rather nasty aftertaste behind. If it were just me, I'd would write it off to not being used to the milk here, but she's tasting it too, and it's VERY pronounced. (I can even smell it from the carton.) I can use the milk for cooking, but I have no desire to drink it or use it on cereal. It even overwhelms double-chocolate muffins.

Doing a bit of poking around, I couldn't find any news about why this might be happening. (Was it some change in milk processing techniques?) I discovered this thread, where a few other people were experiencing what sounds like the same thing. These complaints were written about the same time we started to notice something was amiss:

This is not the taste of milk that is going sour. I can detect that taste from 2 miles and when it is so faint that a bloodhound could not smell it. This is definately a taste of something besides sourness. But it is still disgusting!! For quite a long time Meijer brand milk did not have this taste. Now, all of a sudden I have 2 gallons from Meijer. Does anyone else buy milk with this "ricey" taste? Do you know what it is? Is it a additive? A chemical?

I wouldn't describe it as being like "rice" (Rice Krispies are quite delicious, actually) but this comment hits the nail on the head:

I know exactly what you're talking about. I don't define it as a "ricey" taste, but I definitely define it as a "taste." An odd taste. An after-taste. A strange, weird taste. I hate it, whatever it is. I wondered the same thing...was it an additive, or something the cows ate? ....

I don't know what accounts for this bad after-taste. But it's bad enough that I've almost given up on drinking milk altogether. It's NOT hormones (whoever commented on that), because so many people are tasting it, and also because my children taste the difference and refuse to drink it. ALSO, at the very same time I was buying this horrid milk in the cities (St. Paul), I was also working an hour away up north. I bought milk at that Walmart one day and discovered it tasted right/correct. It tasted like 2% is supposed to taste and I LOVED milk again. I started buying all our 2% there (Great Value milk) and things were going great. The Great Value milk from Walmart in the cities down here was HORRIBLE...how could the same brand have two completely different tasting milks just by being in two different cities?

Just two weeks ago, the Walmart milk from up north started tasting wretched as well . My kids noticed it first and then I tried it. They were right- it was horrible. WHAT IS GOING ON? I love milk too much to just give up on drinking it- I want to get to the bottom of this. It's not just the off brands or cheap brands either....at least, not here in MN. I tried Land O'Lakes, Kemps, and the off brands, and ALL of them had this same, putrid after-taste.

I should add that I'm not on any medications, nor is my girlfriend -- we both notice its presence and absence in the same milk samples when we compare notes. The milk isn't sour (I even just did this experiment to confirm) -- the taste is there even when we just get it home from the store, and it doesn't change much over time. It's been winter for most the time we've noticed this, and I live less than five minutes from the store -- so it's not going bad in the trunk.

I don't know what's going on, but it's enough to make me want to never drink milk again. Is anyone else out there noticing it? Any theories or other reports?

Comments

I googled this b/c i've noticed it for a few years. i came to this thread. i think the taste is a chemical taste, kind of like acitone (nail polish remover or alcohol). We only drink organic milk - that's where I smell and taste it.

Posted by: Jen on August 18, 2009 02:02 PM

I am in NC and have also noticed this taste for about two years. We drink organic milk, and I have noticed it is worse in skim, but right now we have a container of Full Circle 1% that tastes bad. It is in a plastic, but not clear container. Full Circle seems to be the worst brand,but I have tasted it in Horizon and Harris Teeter brands. The only one I haven't had a problem with is Organic Valley, which is of course the most expensive. I believe this brand is one of the only true organic, not "factory farm organic", milks. Scary.

Posted by: Laura on August 22, 2009 09:45 AM

A couple of webpages of interest, describing causes of off flavors in milk and how to prevent them. Could the "ricey" taste be what they are describing as "malty," or "grapenuts" taste? Yuck.

http://www.farminfo.org/dairy/flavor-m.htm

http://docs.google.com/gview?a=v&q=cache:hD0dCi_-PpkJ:www.das.psu.edu/research-extension/dairy/pdf/milkflavor.pdf+milk+oxidation+flavor&hl=en&gl=us

Posted by: Laura on August 22, 2009 10:05 AM

I'm so glad to find this thread.

I call it "the chemical". I've complained about it for 10 years now. At first, it was just Viva milk in Salt Lake City. Now, after moving 4 different times, I am always scared when we go to the grocery store for the first time to see if the milk has "the chemical".

We're in Boston now, and the Market Basket and Stop 'n Shop milk is delicious. The Target milk? BLAH. My wife can taste it now that I pointed it out, and one of my kids can tell also. The others don't seem to notice much.

It's a bitter taste and leaves a bad aftertaste. It's like a chemical or maybe plastic. I cannot believe people buy the milk. I can't drink it or eat cereal in it.

Haven't had a brand of milk "switch" to having the chemical yet.

Posted by: Ryan on August 29, 2009 08:03 PM

I'm a big milk drinker (2%), and just moved from NH to IN. Back in NH, the milk was good from Hannafords, Shaws, Oakhurst, and smileys, I didn't care for marketbasket, but it was bearable. Here in IN, the first milk i tried was from Payless, I didn't like it at all, next was Marshes; which was better, maybe on par with marketbasket. Then I tried some orgnanic milk that was twice as expensive, but not much improvement. Now I just tried a glass of payless again and it's terrible! I can't even finish the glass! What is going on? Why is the milk so different?

Posted by: Graham on September 8, 2009 12:54 PM

I'm in Wisconsin and have noticed the problem for several years. It's a bad chemical taste. I've noticed it in every brand and every variation (whole, 2%, 1%, and skim). I don't buy cartons, so I'm not sure about those. The strange thing is how it comes and goes. I just bought a gallon of skim from a convenience store that operates their own dairy, and it had the bad taste. A friend of mine use to drive a milk truck and told me that a few years back they changed the way they clean and disinfect the tanks. I wonder if that could have something to do with it. Someone in the dairy industry knows what is causing this. I plan on writing some letters to try to get to the bottom of this.

Posted by: Rob on September 10, 2009 09:03 AM

I'm in Roanoke, VA. I got some Horizon 2% at Kroger(all Horizon is usually good) but I experienced the strong medicine-like/plastic taste this evening. I don't think it was "green onion" in the milk because I had some of those for supper and they tasted good. My wife said she thought it had a strong medicine taste to it well before the date on the carton and easily within the 7 day use requirement. Disgusting!!!

Posted by: Steve Alvis on September 28, 2009 06:25 PM

I started noticing this first about a year or year and one half ago. First noticed it in Horizon organic then other brands. Regular milk does not seem to be effected like the organics. Also noticed the ultra-pasteurized is much worse. Compare for example the Horizon brand organic ultra-pasteurized vs regular pasteurized and you will notice the taste is only in the ultra. The taste and/or odor is not normal. Some say chemical or plastic some describe it as band aid taste or bitterness. It is hard to place but it is there. Something is definitely wrong and the milk producers are hiding it. I have contacted several companies and though they act concerned they have no answers. The origination of this taste must be in the packaging, processing, or care of the animals and should be easy to isolate. The main culprit as stated above seems to be ultra-pasteurized. UHT processed milk is treated at a higher heat for a shorter time period. Higher heat of course denatures the proteins to a greater extent. Also heat will bring out volatile compounds and change the flavor other constituents such as the fatty acids. So it could be as simple as overheated milk with a different flavor.
One last thought. Brettanomyces is a genus of yeast that produces 4-ethyl phenol. a compound that produces the exact flavor of Band aids. It is common in red wines. It has also been isolated in milks and cheeses and is prevalent in silage. So it could be the flavor from feed or from yeast in the stored milk prior to pasteurization.
Anyway, it may be a by product of the current production processes or it could indeed be a conspiracy.

Posted by: Ethan on October 17, 2009 10:56 AM

The other link says it's because of "oxidation" from light. Any truth to this? My wife and 2 kids both notice it when we get a gallon of this nasty milk. All we can do is use it for instant oatmeal or cooking when we get one of these. It's horrible and it's bothering me to no end. I want to know how I can get back my perfect skim milk. We are up to about 1 of every 3 gallons purchased tasting this way.

Posted by: on November 11, 2009 07:28 PM

Kelly - Interesting.
I found
an article on milk oxidation.

I guess according to this the reason that the oxidation which occurs in skim milk is not the cause is that the fat is removed from skim milk and it's the oxidized fat which causes the problems, even in very small amounts such as with skim milk.

The taste of powdered milk is not from oxidation it is from the high heat treatment that the milk undergoes to get dried, similar to how UHT or shelf stable fluid milk tastes.

You're saying that heat does something else besides just oxidize the constituents? I'm curious what.

Posted by: Ryan W. on November 22, 2009 10:58 PM

I have mainly noticed it in Walmart milk and half and half. Is it some type of preservative so that it can be shipped for a long time? Other local brands don't seem to be affected.

Posted by: Jess M on November 24, 2009 09:23 AM

I've noticed that Meijer 2% has a strong 'thick' taste. I can't put my finger on what the flavor is, but it is consistant over at least a year. Not quite bad, but really different than the Kroger 2% I normally buy. Has anyone else tasted this at Meijer?

Posted by: Kevin on December 15, 2009 05:17 PM

Target's milk has a very strange taste. I cannot quite describe other than to say that is not good.

Posted by: on December 16, 2009 10:42 PM

I live near Vancouver British Columbia. Our milk has been tasting aweful for a few years now. Occasionally we get a jug that's good but it seems that at least half the milk we buy these days has that god aweful chemical after taste. I've heard it is a new chlorination method that permits the use of milk that would normally be discarded but this may just be a rumour. One thing for certain they've done something that has ruined the taste of milk and if it's chemical additives people have the right to know.

Posted by: Murray on December 20, 2009 08:56 PM

I've done a slight amount of searching and found a study on the Journal of Dairy Science (sounds like a lively lot, right?) about the effect of cattle ethanol consumption on milk flavor. (Cows may be ingesting ethanol from fermented feed.) http://jds.fass.org/cgi/content/abstract/82/2/420
"When cows received ethanol...Milk concentrations... of ethanol and acetone increased...The proportion of palmitic acid in milk fat increased... Organoleptic milk quality was reduced because of an increase in milk tainted by feed flavors. The off-flavor could not be attributed solely to the ethanol transmitted to the milk. Precautions should be taken to avoid extensive production of ethanol during fermentation of grass silage and other feeds that are to be fed to dairy cows."

In short, ethanol in feed made the milk taste bad ("the organoleptic quality decreased" - where organoleptic quality means flavor quality)

So here are some of the observations on the bad milk flavor, and then how these correlate with ethanol in feed affecting flavor:
Observed:
1. Random incidents of bad flavor; of 2 milks, even from the same brand made on the same day, one may have the flavor and one may not
2. Varying degrees of bad flavor
3. Higher quality brands having less frequent occurrences of the bad flavor.
Theory:
1. Some cows eat fermented feed, some don't.
2. Some cows eat more fermented feed.
3. Higher quality milk producers are likely to have fresher feed/ higher quality feed for all the cows

Given bad milk flavor has been occurring for the last 20 years (according to some comments here), I think alcohol-eating cows are a reasonable explanation (and hopefully a bit consoling to those worried about their delicious milk). I wouldn't say this is conclusively why your milk is tasting weird, but as they noted minute quantities of rocket fuel in California milk, I think it's more plausible than a nation-wide contamination of some horrible chemical that'll be sterilizing your kids. At the very least, I think this points to something the cows are eating.

Personally, I'm going to try buying whatever the higher quality brands are, as taking that first sip of nasty milk is the bane of my dietary existence at the moment.

A note on acetone(because it sounds like something nasty you wouldn't want in your milk): concentrations were on the order of 0.01 millimole / liter, or on the order of less than 1 ppm - well below noticeable health effects [ingesting 20 grams a day (WAAAAY higher than anything you'd get from milk) caused no health effects in a study]. However breathing acetone vapor concentrations around 250ppm for a few hours can cause some effect... so don't do that.

Posted by: KG on January 2, 2010 09:44 PM

I'm in sonoma county CA and my gf's family loves Lucern milk and I cannot stand it. It has the onion taste or just bad gas taste or something. Sometimes it gets stronger 1 or 2 days after it's been in the fridge. I notice it most when it hits the back of my mouth. On the other hand, I buy the Berkley Farms or even Crystal and find that it tastes really good, but maybe a little of a rice taste if rice tasted sweet. They cannot stand the taste of that milk--completely opposite. Recently I've been putting a glass of the Lucern milk in the microwave for 30 secs and finding that it takes the edge off of it. Maybe it has something to do with the heating process during the homogenization or whatever. I'm going to try drinking raw milk anyway because of other things I am reading. But in our family we disagree on which taste of milk is nasty and which is good.

Posted by: Matt on January 20, 2010 04:59 PM

My wife and I are BIG milk drinkers - four to five gallons a week - and we have been noticing the bad taste from Walmart's Great Value Skim milk here in Austin Texas. Neither of us can stomach the strong taste so we are returning the two unopened gallons and are going back to milk from H.E.B. which has so far been fine.

Posted by: Rick on January 20, 2010 07:01 PM

I have been noticing this taste for several years now, mostly in Kroger 1% milk. The people at the store were very unconcerned about it. My kids refused to drink this milk. My husband says it tastes like the milk he had when he was a kid and his parents tried to stretch it by adding powdered milk to it. I noticed on the label of ALL the varieties of Kroger milk that they don't just list milk and vitamin D, they all list milk, skim milk and vitamins. What is up with that? Why add skim milk to whole milk?

Posted by: Krissy on February 5, 2010 07:28 AM

I've noticed during the past year or two that Horizon milk has a funky metallic taste and smell, just awful.... Also, I've repeatedly tossed brand new cartons of Horizon half-and-half because what comes out looks like stringy, snotty mucous.... rather disgusting and repulsive. No more Horizon products for me. I now buy organic milk from a small local dairy and haven't had a problem.

Posted by: Anne O'D on March 10, 2010 02:01 PM

I have noticed this indescribable taste and odor in a few of the gallon bottles of Target (Market Pantry) branded fat free, that I have purchased over the past 2 years. Hoping for better results with Kemps.

Posted by: Alex on March 12, 2010 08:56 AM

we have been experiencing the same thing in Rochester ny for the past year. we have tried buying from a dairy (glass bottles). we have tried buying in 1/2 gallons instead of gallons. sometimes the taste is bad right when we bring it home from the store. next we're trying paper cartons.

Posted by: abh on March 15, 2010 08:48 PM

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