What is the minimum vigorous boiling time required for dried kidney beans to eliminate toxins?

Answer

ten minutes

To neutralize the high concentrations of the lectin phytohaemagglutinin present in dried kidney beans, a multi-step preparation process is mandatory, with the boiling stage being non-negotiable for safety. After a prerequisite soaking period where the soaking water must be discarded, the beans require vigorous boiling for a minimum duration of ten minutes. Although some safety recommendations suggest extending this to thirty minutes for the utmost caution, ten minutes serves as the foundational requirement to effectively break down the toxin. Failing to achieve this high-heat exposure means the beans remain unsafe for consumption, regardless of how long they are subsequently simmered until tender.

What is the minimum vigorous boiling time required for dried kidney beans to eliminate toxins?

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