Final answer:
The question is related to cultural studies within English Language Arts, requiring analysis of both a descriptive meal passage and an excerpt from poetry likely by Walt Whitman, studied typically in high school.
Step-by-step explanation:
The question seems to be primarily about identifying and understanding various food items mentioned in a text, which can be related to cultural studies within the subject of English Language Arts. The text includes descriptive details on a meal that featured foods like clam chowder, wurst, frankfurters, unsalted butter, and pretzels, as well as a Gotha truffle. This passage could be part of a larger literary analysis or study of cultural references within literature. Moreover, the excerpt mentioning '20', 'Who goes there?' and other reflective questions could be from Walt Whitman's poetry, which is known for exploring the self and the nature of humanity, and is an essential part of the American literary canon often studied in high school English courses.