Update (Friday, September 21, 1:45 p.m.): This is a real stumper, apparently. New hint after the jump.
Well, gee. I haven't done one of these for a while.
At any rate, guess where I'm eating this sandwich and win a $25 gift certificate to Kampai Sushi Bar (4949 West Pine Boulevard; 314-367-2020).
Rules: To be eligible, you must leave a valid e-mail address (or Twitter handle or Facebook profile URL) in the comment-entry field. One guess per e-mail address. Employees of the restaurant in question and Riverfront Times are not eligible.
Update: (Monday, September 24, 10:15 a.m.) Congrats to Brock, who correctly guessed that this sandwich is from Frontenac Grill (731 South Lindbergh Boulevard, Frontenac; 314-569-4115).
Hint: Though I ate here by myself, this isn't a place for only the lonely.
Hint: I'm east of I-270, and I'm north of Interstate 64, though not by very much at all.
New Hint: I drive a Honda. I could've taken it in for an oil change and then walked to lunch.
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