Can you tell me the story of Boss Dharamsee and the grapes? I've heard it's a good example of Baba's leelas.

Of course. The story of Boss Dharamsee is a powerful illustration of Sai Baba's omniscience and ability to transform a skeptic into a devotee. As detailed in Chapter 35, Dharamsee arrived in Shirdi with a clinical and curious mind. When Kaka offered grapes with seeds to Baba, Baba began distributing them. Dharamsee, who disliked seeded grapes, was internally conflicted and even questioned Baba's sainthood in his mind. Noticing this, Baba gave him even more grapes. When Baba commanded him to eat them, Dharamsee was astonished to find they had become seedless. This miracle completely dissolved his ego and skepticism, replacing it with love for Sai. This experience, as Chapter 35 explains, solidified his determination to visit Shirdi again.