Quote:
Originally Posted by modhatter
I was more concerned about keeping ice. I make fresh lemonade for myself and like to have lots of ice to put in my glass, so keeping ice is the objective. Good idea about the frozen juice bottles though. Could serve two purposes.
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Using some block ice, either home made or store bought, would extend the life of the cubes, at the cost of reducing space for cubes.
Using some dry ice instead of block ice would do the same and consume less space. Since you store no food there is no risk of freezer burn. The risk would be cracking the interior plastic from being too cold, so just keep the dry ice away from the sides and/or well insulated.
The other risk is freezing the cubes together, but that is not a serious issue.
I have had great success taking enough meat to feed 20 boy scouts in the Nevada desert in July using dry ice. But we started out with 100 pounds. Dry ice is rather expensive. You would not need very much. Probably a pound or two, depending on how long you will be camping.