As per post n/o 39 , I just shop as I go .
I carry a few ready meals and some oatcakes , but beyond that , buy as you go .
It's better to eat fresh food anyway
i buy food during the day , and carry 2 x 24hr ration packs , that give me the ability to camp anywhere at night , and a katadyn water purifier so i don't need to carry water .