Why does the author of the Sai Satcharitra believe food donation is superior to other forms of giving, as mentioned in Chapter 38?

In Chapter 38, the author makes a clear case for the superiority of food donation. It is explained that while giving clothes or vessels requires consideration, donating food needs no such basis and should be offered to anyone at any time. The text posits that other donations are incomplete without food donation, using analogies to illustrate this point: a donation without food is like 'a cluster of stars without the moon' or 'a necklace...without a pendant.' As Chapter 38 concludes on this point, just as 'Varann' (fine rice with lentil) is the best among foods, Annadan is the 'merit among merits,' making it the chief and foremost form of charity.