Can you describe the specific worship routine and the significance of 'Prasad' in the Tarkhad household as shown in this story?

The daily worship in the Tarkhad household was a dedicated and consistent practice. As detailed in Chapter 9, the son would perform a morning worship after his bath, which included offering Naivedya (a food offering) to a photograph of Sai Baba with full devotion. When the father, Babasaheb Tarkhad, took over this duty, he specifically used a piece of sugar candy for the Naivedya. The 'Prasad' held special significance. After the sugar candy was offered, it became consecrated Prasad. It was a daily custom for the cook to serve this leftover sugar candy in Mr. Tarkhad's plate when he sat for his meal, and this was considered a 'purification of the food.' The absence of this Prasad on the day the offering was forgotten was what alerted Mr. Tarkhad to his mistake.