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Black crud in commercial organic Cabernet?

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Guttoc27

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I may be totally naive, but what the heck is this? It's not grainy sediment. It'll held together and stuck to the bottle. Thoughts? Thank you.





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balatonwine

The Verecund Vigneron
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Probably either tartaric acid crystals (which is a common and normal sediment for red wines (but that is a lot)) or yeast sediment stained by the wine.

Organic producers don't add preservatives so maybe there was a little in bottle fermentation over time. Or they didn't use clarifying agents, or didn't microfilter and some existing material in the wine can come out of suspension over time.

But that amount is still lot in either case. If it is yeast sediment it is also possible they were taking from near the bottom of the barrel and during bottling.
 

Boatboy24

No longer a newbie, but still clueless.
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Is it fairly gritty? I'm leaning toward tartaric acid crystals (aka 'wine diamonds'). Fairly common and nothing to worry about, other than being visually non-pleasing.
 

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