What does a mysterious stranger
leave on the grave of Edgar Allan
Poe once a year ?

Ever since the year 1949, on the night of the anniversary of Poe's birth, a mysterious stranger has entered the depths of the cemetary, and left a tribute to him. The tribute every year consistes of a partial bottle of cognac, and three roses. The presumption for the roses is that it represents the three persons buried underneath the monument. No one to this day knows who the mysterious Poe lover is, but is refered to as the Poe Toaster. Out of respect no one has attemped to find out his identy either. Several of the bottles of cognac are on display in Baltimore, in the Poe House and Museum.

Correct. Great answer !

Thanks Jenny !