What is the 'culinary' metaphor used in Chapter 49 to explain the purpose of sharing Sai's stories?

In Chapter 49, the author uses a beautiful metaphor involving food and feasting to explain his motivation for writing and sharing Sai's stories. He compares the bliss derived from these stories to tasting "sweet delicacies." He then explains that a sweet delicacy's taste turns bland if not shared with friends and virtuous people. This feeling prompted the author to share the stories, creating what he calls a "culinary arrangement of essence." The core idea, as expressed in the chapter, is that he wanted to bring other listeners to this feast so that the "bliss of the self-essence doubles," highlighting the communal joy in spiritual experiences.