Could you elaborate on the story of the Yogi who visited Baba with Chandorkar, as told in Chapter 23?

Certainly. Chapter 23 recounts the story of a Yogi, who was well-versed in the Yoga Shastras of Patanjali but could not achieve Samadhi. Hoping for a spiritual breakthrough, he accompanied Nanasaheb Chandorkar to see Baba. However, his faith wavered when he saw Baba eating stale bread with onions, and he thought, "How can this man remove my doubts?" Sai Baba, being omniscient, immediately perceived the Yogi's thought and remarked to Nana, "only those whose digestion is strong should eat onion." As Chapter 23 explains, this statement startled the Yogi, who realized Baba knew his innermost thoughts. With his doubt dispelled, he surrendered to Baba, listened to His words, and returned with a happy and peaceful mind after receiving Udi and blessings.