I am a poison strong enough to kill the sturdiest of men but I have the power to make even the vilest of dishes irresistible. What am I?

Why this works

This riddle plays on the dual nature of hunger. On one hand, hunger can be seen as a "poison" because extreme hunger can lead to weakness and even death, highlighting its potential dangers. On the other hand, hunger enhances the appeal of food, making even the most unappetizing meals seem delicious when one is starving. Thus, hunger embodies both the peril of deprivation and the allure of sustenance, making it a fitting answer to the riddle.