Guess where I’m eating a Chipotle Chicken Fiesta Sandwich? (Update)

Update: There were excellent guesses to this week’s “Where Am I Eating?” question, but all near misses. For the correct answer, read through to the bottom of the original post.

The vintage china and the teacups probably give this mystery question away quickly, but where can you find this sandwich: a combination of sliced chicken breast topped with chipotle mayonnaise, pepper-jack cheese, red onion, lettuce and tomato on a French-style loaf?