Dressed up as a recipe, this short poem starts with ingredients and ends somewhere much stranger. The first lines feel almost playful: forty "brass apples," fat from pork and beef, pears compared to "cold little trumpets." Those images mix food with metal and music, so the fruit already seems a little unreal, hard and shiny rather than ripe.
Then the instruction changes. Instead of "bake" or "stir," the cook is told to "teach them the discourse / of rot and sin and supper." Now the ingredients are almost like students, and what they must learn is decay, guilt, and the ordinary act of eating. The poem seems to link all three, as if a festive cake already carries the idea of spoiling and wrongdoing inside it.
The speaker sounds calm and matter-of-fact, which makes the oddness stronger. The mood is wry, slightly eerie, and darkly humorous, a holiday treat seen with a cold, knowing eye.