Wot?No brown sauce?

Not a Cornish pasty! Today's teaser: what is it, apart from terribly big? Do you know? And what is CB about to eat (in the background)?
Bit of a shame, not blipping in the abundant sunshine of the morning, but my theory is that if I did, Cousin Sun would say "Right, blipping over, I can pull up my cosy duvet of clouds and have the rest of the day off." This way, he has to keep on shining. Though, looking out of the window, I can see he's packed up already, and it's only ten past three.