I'm mostly with the Reverend on this:

Milk, very cold (mmm)
Soy sauce, just like worcester sauce, out (vinegar and salt as natural preservatives)
Honey, out (sugar as a natural preservative)
Ketchup, out (unnatural preservatives)

Maple syrup, on the other hand, I'm quite happy to keep on a completely different continent. It might be useful for seasoning one's cricket bat, but I'm not putting on my breakfast.

Peter