At the end of the page.
"No joke, the Devs gave it some serious consideration. The team debated many foods, however the age old topic of appropriate climate and environment kept coming up… It is way too cold in Skyrim to grow something tropical like a banana. Some Devs would really want to include a food item and others would fiercely debate how unrealistic it would be to include that piece of food. The attention to detail is phenomenal.
I hope we’ve been helpful! Thanks everyone for such great questions and impressing THE guys that are putting out what looks like a lock for Game of the Year…"
My opinion on bananas: I agree that it would not be possible to grow bananas in such a climate. But I believe in some of the southern towns or villages they may import bananas from places like Cyrodiil(Originally supposed to be a jungle like environment). So it wouldn't be to difficult to trade.
Also it may be possible so that bananas could reach there destination preserved they may have used certain restorative spells to keep them from decaying until it reaches some noble's or Jarl's place.
Also what other foods do you think would be current in the Skyrim area?
I expect alot of mutton.