What is a Shraddha ceremony, and what specific event occurred during Balaji Patil's?

A Shraddha is described as an anniversary ceremony. During the Shraddha for the devotee Balaji Patil, a significant event unfolded which tested the faith of his family. As detailed in Chapter 35, food was prepared for an estimated number of guests, but at the time of serving, three times as many people arrived. This caused the woman of the house great anxiety about a potential food shortage and the resulting humiliation. Her mother-in-law, however, displayed immense faith in Sai Baba to resolve the situation.