Using dry ice also helps to prevent freezer burn ... Dump a layer of dry ice at the bottom of your cooler before laying your produce on a baking sheet and placing it on top of the ice.
He analyzed the problem with his carbonation techniques and ended up with a method of force carbonating beverages using dry ice ... himself has tried the dry ice in a cooler full of root ...
You can put the dry ice on the top shelf of your freezer ... If you don't have a cooler, you can use your freezer instead -- it's insulated and will keep your food cold as long as you leave ...