I'd like it if the items remained individual, and varied, BUT, I think they should automatically be sent to an independent, isolated camp stash that contains your camping supplies; no mess, no fuss, no time on inventory management... however, when you camp, it brings up the food stash for you to select your camping value from.
I favour this idea since it allows the flavour of different food items to remain, at relatively little click and time cost... and it also leaves open the *possibility* of them putting in a little cooking mini game on the side, to give you minor buffs based on making specific camp meals with things as part of your selection ^.^
This sounds even better.
^_^
