I don't know why, but I've been on a gyro kick lately. Guess where I ate this gyro and win a paperback copy of Secret Ingredients: The New Yorker Book of Food and Drink
Remember, to win you must leave a VALID EMAIL ADDRESS in the comment entry field. I think this is a pretty easy one, especially relative to the quality of the prize, so I'm going to limit you to ONE GUESS PER EMAIL ADDRESS this time.RFT
and Gut Check writers and employees of the restaurant in question not eligible.
Update: (Friday, 6.4, 10:38 a.m.) Congrats to commenter Paul, who correctly guessed that this gyro is from Olympia Kebob House & Taverna