Jam of mass destruction

I've been reading Hans Blix's book on his experiences as head of UNMOVIC.

When asked about the declaration and the difficulties Iraq might have in reporting about so many types of items over such long periods, I said that “producing mustard gas is not like producing marmalade. You keep track of how much you make and what happens to it.”

...and on the next page when discussing the inspection of a presidential site on the Tigris:

In this guesthouse there were no archives, document files or stores of chemical or biological weapons and no sensitive equipment to tag, but there was lots of marmalade in the refrigerators.

I can't help but feel that someone was having a laugh...

(They did find mustard gas shells elsewhere in the same kind of time frame.)