What part of speech is in this sentence The connoisseur fine food bought several unusual spices to prepare the meal?

The part of speech that is missing in the sentence "The connoisseur of fine food bought several unusual spices to prepare the meal" is a preposition.

Specifically, the preposition "of" is missing after "connoisseur".

Here's the corrected sentence:

"The connoisseur of fine food bought several unusual spices to prepare the meal."