When items need to stay frozen, ditch the wet ice and place additional dry ice on top.
- Step 1: Place dry ice at the bottom of the cooler.
- Step 2: Add a layer of insulation (newspaper, cardboard, etc.)
- Step 3: Add items to be frozen.
- Step 4: Add another layer of insulation.
- Step 5: Place dry ice on top and close cooler.
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