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In Chinese dynastic times, silver chopsticks were sometimes used as an early warning sign of poisoned food: people believed that the silver would turn black if it came in contact with toxins, like cyanide or arsenic. However, the truth wasn’t quite that simple. It was the combination of toxins with foods like onion and garlic that created hydrogen sulfide, which then reacted with silver chopsticks.
In Chinese dynastic times, silver chopsticks were sometimes used as an early warning sign of poisoned food: people believed that the silver would turn black if it came in contact with toxins, like cyanide or arsenic. However, the truth wasn’t quite that simple. It was the combination of toxins with foods like onion and garlic that created hydrogen sulfide, which then reacted with silver chopsticks.
