The title of the Edgar Allan Poe short story, "The Cask of Amontillado," is a highly appropriate one since it serves as the lure that Montressor uses to draw Fortunato into his final resting place. Montressor knows that Fortunato has one weakness that cannot be resisted:
He had a weak point—this Fortunato—although in other regards he was a man to be respected and even feared. He prided himself on his connoisseur-ship in wine.
So, Montressor used the non-existent rare bottle of Amontillado--a Spanish sherry--as bait to attract Fortunato into the recesses of the catacombs, which also served as his family's wine cellars. It was one temptation that Fortunato could not resist.
The title of Edgar Allan Poe's "The Cask of Amontillado" refers to the rare pipe of Amontillado that Montresor claims to have in order to lure Fortunato back to Montresor's home. Fortunato has wounded Montresor with some unknown insult that has caused Montresor to vow to get revenge by punishing Fortunato with "impunity." Montresor puts on a friendly face and uses his knowledge of Fortunato's one great weakness--his great love for wine--in order to convince the man to accompany Montresor back to his wine cellar.
Ultimately, Montresor does not have a pipe of Amontillado; he instead gets Fortunato even more inebriated on Medoc. Once the man is drunk enough, Montresor begins to pave a wall around him, sealing him up in the damp catacombs and allowing the man to die in this makeshift tomb.