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Why does my diet soda taste off? Aspartame hydrolysis

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Re: Why does my diet soda taste off? Aspartame hydrolysis

#201
post #107

Earlier quoted context omitted.

I'm not suggesting a pairing, but I think expecting that it might be 'on' is perhaps a bit, er, off. To me (BrE), 'gone off' is like 'has developed off-flavours', which is like off-course & on-course but also off-side & near-side.

"On-side" is definitely a thing people say. "Off" can also mean "away", though. If you "go off", you can "come back."

Oh yes that's true - but that's antonym to a different 'off-side'!

Re: Why does my diet soda taste off? Aspartame hydrolysis

#202

Every soft drink I’ve had since COVID have tasted off. So. If your drinks taste off, that might also be the explanation.

That's really interesting. That suggests that taste may be a calibrated sense, where signals come from multiple sensors and are 'gathered' into the final perception. Probably some of your taste buds and olfactory sensors are less sensitive after covid, or may even respond differently, producing a different mix of signals. To return to normal, I suspect the lagging sensors will need to fully revive.

I wonder if there's a way to retrain sensory organs, to shape your perception of flavor, perhaps the way that oenophiles teach someone to taste wine more sensitively and meaningfully. Can one learn to deconvolute the the signals of taste?

Re: Why does my diet soda taste off? Aspartame hydrolysis

#203
post #4

Awesome! As someone who used to drink a lot of Diet Dr. Pepper (DDP) I could easily tell how close a given can (or bottle) was to its "use by" date. This makes for a great party trick [1] but otherwise has limited utility. It also made for some socially awkward situations where, when visiting friends, they would want to have drinks on hand that their guests like and would go out of their way to get some DDP for me, n…

Sorry, but do you mean that you drink sweetened water?

May sounds weird, but is that not what tons of popular drinks basically are? Half water, half sugar, a few vitamins/electrolytes + coloring.

Re: Why does my diet soda taste off? Aspartame hydrolysis

#204

Earlier quoted context omitted.

The carbonation is the difference. It will explode as it becomes a slush and make a massive mess.

That just happened to me. I left a 2 liter in the freezer. I then transferred it to the fridge, thinking the gradual temperature change would be fine. I woke to a strange sound. The bottle had blown the fridge door open, a large gash down the side of the bottle, soda slush everywhere. It took me an hour to clean the fridge.

I've had something similar happen. I was keeping home-made ginger beer in our refrigerator for some weeks after I'd made several bottles of it. Ginger beer is yeast, water, sugar, ginger juice, and a few other things. I didn't realize that - even at 3-4 degrees Celsius the yeast would continue doing their thing, albeit slowly.

I was sitting at the kitchen table, right next to the fridge, when a 750 ml glass bottle of ginger beer exploded. It took out another bottle along with the tempered glass shelf it had been sitting on.

Not only did it take more than an hour to clean up, the replacement shelf my wife ordered was the wrong one, so she had to order yet another replacement. It took ages to arrive.

I have not yet been allowed to make more home-made ginger beer, which is a shame because it's very tasty and is excellent for making cocktails in the summer.

Re: Why does my diet soda taste off? Aspartame hydrolysis

#206
post #46

Never saw the point of diet sodas. I'd much rather drink normal coke with proper sugar in it. It's unhealthy, yes - so drink slightly less.

Sugary soda is associated with no better or worse health outcomes than diet soda. In fact both are similarly bad for you. https://jamanetwork.com/journals/jamainternalmedicine/fullar...

Surely 40g of sugar if you do not need all that energy is worse than 0g of sugar.

Almost every advancement in dietary knowledge I have see over my life has indicated more and more that excess sugar (and carbs in general) is by far the biggest problem all over the world. And it is trivial to consume excess carbs with a modern lifestyle in a developed country.

Re: Why does my diet soda taste off? Aspartame hydrolysis

#207
post #153

Earlier quoted context omitted.

The latter case is related more to 'writing something down [on paper]' than to a standard up/down usage that implies directionality.

And certainly being marked down has different connotations from being written up!

Don't forget markdown and markup!

Re: Why does my diet soda taste off? Aspartame hydrolysis

#208
I think there has to be a certain part of the population that is sensitive to the taste of non-sugar sweeteners. A lot of people I asked said they can’t tell the difference but to me they all taste bitter or metallic, even stevia and agave. monkfruit is the only sweeter than sugar sweetener that doesn’t taste bitter to me.

From my understanding it is different compounds that cause the bad taste for each sweetener, but I suppose people might be sensitive to some more than others. I wonder why it is that only sugar does not produce the bad flavor.

Re: Why does my diet soda taste off? Aspartame hydrolysis

#209

I once explained to a coworker that I brought in some soda that day because the diet soda at work was expired. They were skeptical and we proceeded to go down to the cafe to setup a blind taste test. I passed with flying colors and we had an interesting conversation about it. It was a fun 20 minutes of not working.

You weren't goofing off, you were applying the scientific method while at the same time engaging in team building. I'm not even kidding. That incidental silliness is valuable. A year later, you run across a problem where a customer explains a problem you don't understand, and then you have a flashback to that time when you did a blind taste test. You look at your colleague and whisper "Hey, remember that blind taste…

Per the other thread, they were "goofing on".

Re: Why does my diet soda taste off? Aspartame hydrolysis

#210
post #76

Some time ago I could tell something was really off about the taste of my diet soda even though it was way before it's expiry date. I was able to find out some storage irregularities with the shop I was buying from and call CC on them. Turns out they were also doing a lot of stupid things like taking meat freezers out of socket overnight to reduce energy consumption.

Was it in hot weather? could accelerate reacrions.
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