How did Sai Baba handle a devotee who was skeptical and disliked the prasad he was offered?

The story of Boss Dharamsee in Chapter 35 provides a clear example of this. Dharamsee arrived in Shirdi with a 'clinical interest' and was displeased when Baba offered him grapes with seeds, a variety he disliked. He was also hesitant to eat them unwashed. As described in Chapter 35, Dharamsee internally questioned Baba's sainthood for this reason. Knowing his thoughts, Baba insisted he eat the grapes. When Dharamsee complied, he was astonished to find they had become seedless. This personal miracle shattered his ego and skepticism, replacing it with love for Sai and a firm determination to return to Shirdi.