[Paul] himself has tried the dry ice in a cooler full of root beer method ... His solution is to use a 60 PSI safety valve. He drilled a hole in a plastic bottle cap to receive the valve.

Using dry ice also helps to prevent freezer burn ... but preserving produce is best done in a cooler. Multiple blocks of dry ice can last for about three days in a large styrofoam cooler ...

A quality polystyrene cooler box from Dry Ice Polystyrene Containers keeps your food fresh and drinks chilled for a hassle-free adventure.

Items in a chest-type deep freezer will fare better than those in an upright, frost-free model. Frost-free freezers periodically cycle to warmer temperatures in order to melt any ice crystals whereas ...