In no particular order:
3) 365 cheeses and the wonderful, knowledgeable people who sell them to me.
5) Moules frites.
6) Raclette (what will I do with my old battered machine now that I have no access to the right cheese?)
9) The best fries in Paris. (Note to anyone else who would like to experience them: the Mozart has sadly changed owners this summer and so I cannot guarantee the continued quality of the fries. It's still a great place for an after-work beer, though.)
10) My kitchen. The first new kitchen I've ever cooked in, the first I've ever designed. It had a few problems and I'm sure I could have done better. But it was my first kitchen of my own making and I shall miss it. Especially the six gas rings.
What would you miss most if you had to move to a new country?