Can you explain the significance of the eggplant story involving the Purandare family?

The story of the eggplants, as detailed in Chapter 9, illustrates Sai Baba's deep connection with his devotees' intentions and serves as an "inner sign of oneness." A devotee named Raghuvir Bhaskar Purandare and his family were traveling to Shirdi when a lady gave them eggplants with the loving request to prepare both 'bharit' (a mashed dish) and 'kachrya' (fried slices) for Baba. However, only the 'bharit' was prepared and offered. After tasting it, Baba specifically asked for the 'kachrya'. This caused a stir since it was not eggplant season. The subsequent search revealed the lady's original, heartfelt request, making everyone understand the deep significance and love behind Baba's seemingly specific craving.