You have a keen eye indeed. You have discovered my first clue and earned a chip in the big game. You are very close to discovering which condiments I do not like, but furthermore you have spied the detail that most would have missed. It was an easy deduction that this meal came from the downtown area given the time of day and the heading of the train. The saucy bits are easily identifiable in the busy streets of our fair city. What truly impresses me is not all would have observed that a bite had been taken out of the garnish, and yet it was left behind. It could be that I merely was unaware of the presence of the unwelcomed morsel and discovered all to late. I am a man of detail and mystery. It would be folly to beleive that someone as detailed as I would not have full inventory of my metroplitan born nurishments. So where did the bite come from? I can see you are astute but you have not fully arrived as master of intrigue just yet at our scene. You hesitate to name the beast because of the texture and coloration. It may not matter entirely as it seems to have lead you here. One may take further inspection and notice that it is not infact a shade to be viewed but moisture. The darker area is dried, in the proximity of the bite. Nay I did stray from my precise mandibular stroke to the feast. This meal was shared. There was a second before me that ingested this feast. Well before my participation. Long enough for the wounded to dry. I would take time to celebrate the success of my ruse as you have missed this detail, but you seem to have a sense of the broader picture. It is as if you were there when I pilfered this portion from the trash bin. How else would you have the notion of our underground nonsanctioned bum fighting league. Sometimes genius involved a little luck. You went down the path and missed the first turn, but were able to doubleback, swift afoot and trace or steps through the thickets. On this I am most impressed. You know the station, you know the crime, but where and who is calling you. Keep a watch for my next clue. Will your insite find it?

Sincerely
The Phantom of the Commute