Once upon a time, the consumption of foods made with R-Y-E often caused ergot poisoning (Holy fire or St. Anthony's fire), resulting in progressive gangrene and/or mental derangement. Rye is a type of cereal grain that was commonly used in bread and other food products. However, when contaminated with a fungus called Claviceps purpurea, it can produce ergot alkaloids that are toxic to humans. Ergot poisoning, also known as ergotism, was a serious problem in medieval Europe, particularly during times of famine when people were more likely to consume contaminated rye. The symptoms of ergot poisoning can vary depending on the amount ingested and the individual's tolerance, but they often include hallucinations, convulsions, and gangrene, which can lead to the loss of limbs or even death. In addition to its physical effects, ergot poisoning also had a profound impact on mental health, causing symptoms such as mania, psychosis, and delirium. This led to the belief that those afflicted were possessed by demons or suffering from divine punishment, hence the names Holy fire and St. Anthony's fire. To prevent ergot poisoning, it is important to properly store and handle grains to prevent fungal contamination. In modern times, strict regulations and quality control measures have been put in place to ensure the safety of food products made with rye and other grains. However, it is still important to be aware of the potential risks and to seek medical attention if you suspect you may have ingested contaminated food. Overall, the story of ergot poisoning serves as a cautionary tale about the dangers of consuming contaminated foods and the importance of food safety. By understanding the history of ergotism and taking steps to prevent it, we can ensure that we continue to enjoy the benefits of grains like rye without the risk of poisoning. Stay informed and stay safe when it comes to your food choices.

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