"I carry a cup of couscous for my emergency/last nights dinner."
Bulgar, or cracked, wheat is an excellent replacement for cous cous, especially as emergency food. You can soak it for an hour or two, drain it, and mix with nuts, dried fruit, some milk, and possibly a sweetener, and have a very tasty breakfast type cereal dish. Alternatively, you can proceed as Nia wrote above for an evening meal. The advantage is that bulgar wheat requires no cooking/boiling water to be tasty and edible. It makes a lot of sense to have at least one meal planned around it on longer trips if you are cutting your fuel allocation close.