One of the many (alleged) foodstuffs that I smuggled back into the UK from my trip to Canada was a box of Lucky Charms and you can be your bottom dollar that I am currently eating a mega bowl of that junk.

Other people I've known who've moved countries have always agreed: you miss the gross stuff the most, the things you'd never really eat when you lived there but when you can't have them they're all you want.

(picture sourced from goog. Note French + English, Au Canada!)