Is it serious if I eat egg tart crust that tastes sour?

Eating sour puff pastry for egg tarts may or may not be serious, depending on the circumstances. If the sourness is very mild, the amount consumed is small, and your digestive system is healthy, you may experience no obvious discomfort. However, if the sourness is pronounced, a large quantity is consumed, or you have a sensitive stomach, it may easily cause nausea, vomiting, diarrhea, and other symptoms, and in severe cases could lead to acute gastroenteritis. If persistent vomiting, high fever, or severe abdominal pain occurs after consumption, prompt medical attention is recommended.

Sourness in egg tart pastry is usually caused by fat oxidation and rancidity or microbial growth. In cases of slight sourness, a small accidental intake may be metabolized by the digestive system of a healthy adult without causing serious symptoms, allowing the body to recover on its own.

However, if the sourness is明显 (obvious), this indicates significant spoilage, with potentially large amounts of microorganisms having multiplied and produced toxins. Even consuming a small amount under these conditions may irritate the gastrointestinal mucosa, leading to frequent diarrhea and vomiting. In severe cases, this can result in dehydration and electrolyte imbalances, posing greater risks to elderly individuals, children, or those with pre-existing gastrointestinal conditions.

In daily life, if you notice any sourness in egg tart pastry before eating, it should be discarded regardless of severity. If you accidentally consume a small amount, drink plenty of warm water to promote metabolism, and temporarily stick to light, easily digestible foods such as congee or noodles to help your gastrointestinal system recover.