The priest's trick was to use what little he had to generate a lot.
Explanation:
This question is about "The wonderful pear tree," which tells the story of an old and poor priest who was hungry and begged a peasant who owned a pear cart to give him a pear to eat. The peasant refused to give the priest a pear, so a woman, feeling sorry for the priest's situation, bought him a pear. Grateful, the priest ate the pear and planted the seeds, which generated a large pear tree, allowing the priest to not go hungry anymore.
