Within the range of herbivorous mammals, every part of every plant that has not evolved to be consumed by an herbivorous mammal (typically fruit), has developed defenses against herbivory. Often more than one. Fortunately for you, in the case of Chlorophytum tubers, saponins are the sole known defense. And the last time I tried one, I barely noticed a "soapy" taste. It was quite watery, though not as neutral as a water chestnut. Let me know how yours taste!
Within the range of herbivorous mammals, every part of every plant that has not evolved to be consumed by an herbivorous mammal (typically fruit), has developed defenses against herbivory. Often more than one. Fortunately for you, in the case of Chlorophytum tubers, saponins are the sole known defense. And the last time I tried one, I barely noticed a "soapy" taste. It was quite watery, though not as neutral as a water chestnut. Let me know how yours taste!