I am a Duke of Edinburgh Award Scheme Trainee Leader, and have completed all three levels myself (Bronze, Silver and Gold).
After going on my Bronze practice I realised what a pain it was to have to attempt to cook food, meant for an average kitchen, on a camping stove. I also grew increasingly annoyed with the amount of time it took to cook in the decreasing light !
Then I found Wayfarers, needless to say since then every expedition I have gone on, ranging from Black Mountains (Wales) to Yorkshire Dales, I have chosen Wayfarers as my nutrition.
They are available in several flavours, though I would personally recommend Chilli Con Carne (which provides a lot of inner body heat, for those cold nights !) and Beans and Sausages for a good breakfast !
Can be eaten at any temperature, even cold, depending on your tastes and patience levels !!