Using frozen water bottles provides blocks that act as ice early in the trip and becomes cold drinking water as they slowly melt. Pro-Tips for Maximum Longevity
While it seems counterintuitive, the cold meltwater helps insulate the remaining ice blocks from warm air pockets. Only drain when necessary to prevent food from getting soggy. where to buy block ice
A single large block has significantly less surface area exposed to warm air than an equivalent weight of small cubes. Tests show block ice can remain intact for 3 to 5 days longer than cubed ice in identical conditions. Using frozen water bottles provides blocks that act
Locating block ice requires knowing which retailers prioritize "hard" ice products over standard convenience bags. A single large block has significantly less surface
In the world of outdoor recreation, block ice is the undisputed "heavyweight champion" of refrigeration. While common cubed ice offers a quick chill, it often leaves a watery mess by the second day of a trip. For those planning extended stays in the wild or hosting large-scale events, finding reliable sources of block ice is essential.
Fill clean, empty gallon milk jugs or large Tupperware containers 90% full with water (leaving room for expansion) and freeze for 48 hours.