In reply to Ramblin dave:
I might drain the pulses, yes, despite the potential for that going wrong. Veg is veg, however, and that's the payoff for the water content. As McLewin says, nothing can beat a nice onion.
That said, I think obsessive weight avoidance is like any other obsession and to be dismissed in principle -- it's all good exercise! -- although I'm nothing on my mate, who's a sort of antiBob in this regard. On an alpine trip, cols etc, not snow, he'll pack into a bottomless sac a couple of 2l bottles of cider, several bottles of local beer, spirits if he can stretch to that, a loaf or two of dense German bread, some rocks he'll have picked up on the way that "look interesting", binoculars that he may or may not use, cameras and lenses, a selection of books, in fact all sorts of curios will emerge over the course of a trip.
Latterly, a camping trip with a walk in of an hour or two might see us each carry two full rucksacks all the way, mainly containing food and drink (I don't drink), although I'll typically arrive well after him in the dark and so haven't quite seen his arrangements.