Could you describe the miracle involving Boss Dharamsee and the grapes in detail?

Yes, Chapter 35 provides a detailed account. A devotee named Kaka brought grapes with seeds as an offering. When Baba began distributing them, he offered some to Boss Dharamsee, who was visiting with a curious but critical mind. Dharamsee disliked seeded grapes and was hesitant to eat them unwashed. He even internally questioned Baba's sainthood for forcing them upon him. Baba, knowing his thoughts, gave him more. When Dharamsee held them in his fist, troubled, Baba commanded, 'Throw them in and eat.' Upon obeying, Dharamsee was astonished to find the grapes were completely seedless. His amazement grew when he confirmed with another devotee, Tarkhad, that his own grapes still had seeds, proving the miracle was personal to him.