Rescuing a Sour Soup: Tips and Tricks for Fixing a Culinary Mishap

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Discussion Overview

The discussion revolves around a culinary mishap involving a large pot of vegetable soup that has developed a sour taste and mold after being left for two days. Participants explore potential reasons for the sourness and suggest various approaches to address the issue, including safety concerns regarding consumption.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant expresses concern that the soup has gone bad due to mold and bacteria growth, suggesting it should be discarded.
  • Another participant notes that a sour taste is typically linked to acidity, which can result from bacteria and molds producing organic acids as food breaks down.
  • A third participant shares an anecdote about sour soup from a Polish restaurant, comparing the process to souring grains for beer, while ultimately recommending discarding the soup due to the uncontrolled nature of the fermentation process.

Areas of Agreement / Disagreement

Participants generally disagree on whether the soup is safe to consume, with some advocating for disposal due to health concerns, while others provide context on sourness in culinary practices.

Contextual Notes

Limitations include uncertainty about the specific types of bacteria or molds present, the degree of sourness, and the safety of consuming the soup after the described mishap.

Irish Guy
Thank you for the welcome. I was looking for an answer for a cooking problem and found an answer that did not quite fit.
I made a huge amount of vegetable soup, kept boiling it some of it stuck to the bottom changed pots left it for two days, some mould formed on the top sides removed the mould blended the vegetables and after tasting it tastes a bit sour. Any idea why and what can I do to rescue the big pot of soup.
 
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I don't know what you are used to eating, but it sounds like the soup has gone bad, no telling what kind of nasty bacteria could have grown, not to mention the mould that is in there. I would not eat it. Throw it out.
 
A sour taste is usually associated with acidity.
The bacteria and moulds Evo mentioned often excrete organic acids as a food breakdown product.
While eating 'gone off' food isn't usually lethal, it's definitely not healthy, could easily produce indigestion or worse, such as diarrhea.
 
Coincidentally, we went to a Polish restaurant over the weekend with friends, and while researching the place, I came across recipes for a sour soup. The process is similar to the process for souring some beers, like Berliner Weisse. Some grain is left in water to sour for several days. Grain is full of lactobacillus, which produces lactic acid, which protects it from other bacteria and mold that might be bad for us.

http://www.lthforum.com/bb/viewtopic.php?p=221326

But since you did not use a controlled, documented process, I'd toss it. Lactic acid = nice bright and tangy, mold could be bad.
 

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