I guess that is where car camping has some benefits. I like to go to the local farmer's market to support the local economy and purchase fruits and vegetables. Grilled veggies are good hot or cold. BCBabe's suggestion about food doubling as ice in a cooler works with freezer ziplock bags too. I like to work from fresh to frozen and by the end of a trip canned, in jars, and dried. Any extra squash, potatoes, onions, garlic, fruit and herbs can be passed on to neighbors who like to cook before heading home...pay it forward. You never know when someone will help when you least expect it!