Freeze-dried pasta and meat dish for all those with a higher energy requirement. Open the packet, add boiling water, stir, leave to infuse - eat.
Trek'n Eat's PS1000+ pasta in creamed mushrooms + beef is a special freeze-dried food that still tastes like food and provides plenty of energy. Perfect if you have to do a lot physically or are out and about in very low temperatures. The food comes in a stand-up pouch and is simply prepared in it with boiling water. As the bag is resealable, you can also prepare a smaller portion if you need less.