In reply to Martin Hore:
Based on what John said above I got that immediately; I don't think Americans will have struggled but plenty of Brits will. It's not a US spelling as such (eg favor), but it's certainly a word that's much, much more commonly used there than here.
If you don't frequent trendy noodle bars, and aren't an adherent of Flying Spaghetti Monsterism, then it's wholly possible never to have come across it.