"Rations" in the late Twilight War

[simonmark6]

I think that most food would be locally produced and locally cooked as many units are more or less static by the end of the Twilight war.

There might however be several types of rations for those who needed to be away from their logistical base for a while:

Patrol rations: Designed for a week or so away from base.
Rye bread (can last a few months)
Wax coated cheese
Potatoes
Freeze dried fruit (mainly apples)
Cured meats for a few days

This menu isn't exciting or hugely easy to transport or cook, but it would keep for the time needed and be easy to produce locally without particulary rare components.

Emergency or Siege rations: Long term
Pease porridge(basically dried peas with maybe some salt, soak it overnight and then boil and you have a really boring mulch which will keep you alive)
Hardtack (rye or other bread baked 2-4 times, virtually indestructible, can be fortified with fat for more calories)
Salt Pork

Given how horrendous this ration is, people would probably have to be ordered to eat it!

Individual troops might be better off than this, but all of the above can be produced by amateurs as long as there is access to salt and if you think your troops will settle for a vegetarian diet you don't even need much of that.