The "Chef's Chat" is there but not always entirely accurate, so retain a slight degree of scepticism. I've had two items with undocumented cheese (I can't stand the stuff) in the last couple of months - much to the chagrin of the unfortunate crew who were blameless.

(they were breakfast items like omelettes where it is folded into the food so not visible until you start eating)

It should help you, though.