So a discussion about the horror that is the McDonalds temporary rib thing came up and I ended up reading a nice article on the whole mcrib vs pork price "theory" ( http://www.theawl.com/2011/11/a-conspiracy-of-hogs-the-mcrib-as-arbitrage ).
Anyway what foods do you really like that you can only get intermittently, I am also counting things like not eating stew except for winter months and if a favourite food commands a silly high price outside of a few months a year.
Obviously the mcrib is not something that will grace my gullet any time soon and I can happily live without cream eggs. What I do miss save for the month and a half or so of year they are around is blood oranges. They are about the size of normal oranges but they have a slightly red flesh and are very nice (that little bit sweeter for me).