From your list cottage and eggs were the only things that made it to Yahel. At 80 I remember bulking up on tea, riba, bread, olives, and halvah. Took me one or two Shabbatot to lay in a large supply of dried fruit roll from the TA Central Bus Station. Always found meals in the field and mivtsait way better than on base. Advanced training (931) didn't have a base, we lived full-time in Ein Darjah, but always ate well. 50 not so much.