The Pine Nut Mystery

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BingBong

Lifer
Apr 26, 2024
2,774
12,525
London UK
Could be the wrong place for this, but it's about palate and something that affects it.

I used to eat pasta quite often with red or green pesto, really liked the stuff and never gave me a problem. But one of the major constituents of pesto is ground pine nut.

Sometime 2006-ish, I was visiting friends and used to spend quite a lot of time in their sun room admiring the splendid garden. The hostess came through with a tiny dish full of pine nuts for me and I sat there happily nibbling on them until they were gone.

Wind forward to the next day. I was suddenly afflicted by the bitterest metallic taste in my mouth. It was like pure, distilled, 150° proof bitter. I could no longer taste sweet, salt, sour, nothing but intense bitter. I drank water. I drank milk. I tried sugary sweets. No. Just... bitter.

I became alarmed that I'd had some kind of brain event, stroke, aneurism, something ghastly and permanent. I was stuck like this for days. The symptoms slowly began to ameliorate, but it took a good two weeks to recover some semblance of normal.

So what had caused it? Well, I'd never actually eaten unprocessed pine nuts before and I began to wonder if they were somehow connected. A bit of research on the Internets revealed, yes, "Pine Nut Mouth" is, or was, a real thing.

Nobody seemed to know why one could eat pine nuts for years and then blammo, afflicted. There were theories about Chinese pine nuts and certain species of pine, unconfirmed. All I know is that, never ever again. No pine nuts. No pesto. Nothing containing them in any form. No thank you.

I told my best mate and his wife about this one night. They were both big on pine nuts in their cuisine. He was curious and was I sure? She went mental at me and gave me dog's abuse for even suggesting such a thing, furious. Oh well.

Coda. About 7 or 8 months later, I was speaking to him, how's tricks? Oh, trouble at home. What's up? Oh, wife's got Pine Nut Mouth, it's the end of the frickin world etc. - went on for about 4 weeks, apparently. Tee-hee.

So, let this be a warning for those of us who treasure our palate - be very cautious around pine nuts.
 

VDL_Piper

Lifer
Jun 4, 2021
2,509
22,760
Springfield Nuclear Power Plant
I've not heard of this and I like pine nuts in a salad or pesto but never eaten them alone as a nibble. I think I shall continue to run the gauntlet but sparingly. Here in Oz the Black Cockatoo's ravage the pine cones looking for the kernel. Walk under pine trees here and there is just a carpet of chewed pine cones on the ground so they obviously don't get pine mouth :ROFLMAO:
red-tailed black-cockatoo bob mcpherson500.jpeg
 

Kobold

Lifer
Feb 2, 2022
1,641
6,659
Maryland
Oh wow I had this happen to me before but I thought the reason for me is that the nuts might have gone rancid. I must have brushed my teeth a thousand times to get rid of the metallic taste. I’ve had pesto since then and it wasn’t a problem.
 
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BingBong

Lifer
Apr 26, 2024
2,774
12,525
London UK
Oh wow I had this happen to me before but I thought the reason for me is that the nuts might have gone rancid. I must have brushed my teeth a thousand times to get rid of the metallic taste. I’ve had pesto since then and it wasn’t a problem.
I admit that I've had pesto in dishes while eating out since and taken the risk, once I've realized what I'm eating, with no further effects.

The question of whether the produce had gone off has arisen, but it doesn't seem to be a factor. It seems to be such an infrequent event that a more widespread analysis is nigh impossible, given that it's unexpected and virtually nobody is in a state of preparedness to scientifically investigate - the fact that there's one paper having a stab at it is welcome!
 

mingc

Lifer
Jun 20, 2019
4,523
13,352
The Big Rock Candy Mountains
Could be the wrong place for this, but it's about palate and something that affects it.

I used to eat pasta quite often with red or green pesto, really liked the stuff and never gave me a problem. But one of the major constituents of pesto is ground pine nut.

Sometime 2006-ish, I was visiting friends and used to spend quite a lot of time in their sun room admiring the splendid garden. The hostess came through with a tiny dish full of pine nuts for me and I sat there happily nibbling on them until they were gone.

Wind forward to the next day. I was suddenly afflicted by the bitterest metallic taste in my mouth. It was like pure, distilled, 150° proof bitter. I could no longer taste sweet, salt, sour, nothing but intense bitter. I drank water. I drank milk. I tried sugary sweets. No. Just... bitter.

I became alarmed that I'd had some kind of brain event, stroke, aneurism, something ghastly and permanent. I was stuck like this for days. The symptoms slowly began to ameliorate, but it took a good two weeks to recover some semblance of normal.

So what had caused it? Well, I'd never actually eaten unprocessed pine nuts before and I began to wonder if they were somehow connected. A bit of research on the Internets revealed, yes, "Pine Nut Mouth" is, or was, a real thing.

Nobody seemed to know why one could eat pine nuts for years and then blammo, afflicted. There were theories about Chinese pine nuts and certain species of pine, unconfirmed. All I know is that, never ever again. No pine nuts. No pesto. Nothing containing them in any form. No thank you.

I told my best mate and his wife about this one night. They were both big on pine nuts in their cuisine. He was curious and was I sure? She went mental at me and gave me dog's abuse for even suggesting such a thing, furious. Oh well.

Coda. About 7 or 8 months later, I was speaking to him, how's tricks? Oh, trouble at home. What's up? Oh, wife's got Pine Nut Mouth, it's the end of the frickin world etc. - went on for about 4 weeks, apparently. Tee-hee.

So, let this be a warning for those of us who treasure our palate - be very cautious around pine nuts.
If you buy pre-made pesto, it may not be made of pine nuts, which are quite expensive. Were the pine nuts that you nibbled on raw or cooked?
 

mingc

Lifer
Jun 20, 2019
4,523
13,352
The Big Rock Candy Mountains
Cooking does mitigate a lot of toxins in food otherwise inedible, just a thought.
True. I'm allergic to certain raw tree nuts. My reaction is immediate and visceral. My throat constricts and I involuntarily projectile vomit the offending substance and whatever else is in my stomach with immediate effect. The same nuts when roasted have no effect whatsoever.