We never carry more than a few days of food with us. Most items that are made from scratch I will measure out and put into an appropriate sized ziplock bag then put all of them with the recipe card in a larger ziplock and store it away in the pantry. (dry ingredients only).
When camping we usually end up in the car every other day so on the way back to the camper we will stop at a farmers market, or store and get the needed items to make the next few days meals.
I enjoy doing canning at home so in the spring and fall we will have home made canned soups and stews.