Could you explain the story of Captain Hate's offering and the significance of the valpapdi beans?

Chapter 29 narrates the delightful story of Captain Hate, a doctor from Gwalior. He had a vivid dream where he met Baba and plucked fresh valpapdi (hyacinth beans) from a garden to prepare a feast. Upon waking, he was determined to make this offering in reality. He sent money and instructions to a friend to go to Shirdi and procure the items. The friend found everything except the specific beans, which caused difficulty. At that very moment, a woman miraculously appeared with a basket of valpapdi, causing 'great astonishment' and allowing the devotee's specific, dream-inspired wish to be respectfully presented to Baba.