I've moved around quite a bit, so I have quite a collection of missed foods.
From the SF Bay Area, where I grew up, I mostly miss ready access to regional Asian foods, particularly authentic Chinese cuisines. Dim sum.
From Spain I most miss the fresh markets--the freshness, variety, and presentation of fish and crustaceans, hams and sausage, leafy veggies, cheese and olives. I also miss the bar food (tapas, etc.)
From central New Jersey it's the Italian specialties so popular around the area. In particular, fresh-made (and never frozen) pasta such as pumpkin tortellini.
From Columbus, OH it's the delicious Middle Eastern foods I used to enjoy at a specific restaurant near downtown. I haven't found such good shwarma since.
From Western New York it's the Indian food from two restaurants there.
From the Deep South I most miss the fried chicken, the barbecue, and the preponderance of "meat-and-three" restaurants.
But here in Milwaukee I have access to many other good things, including some of the best pizza I've ever had.
<message edited by quijote on Tue, 11/3/09 10:59 PM>