The cold winter air has a remarkable power–the power to freeze things. This can be our nemesis if we are stuck out in the cold, but it can also be used to our advantage. Winter is nature’s fridge and freezer, and if you get caught without power, you can allow the cold to preserve your food through freezing. A simple way to do this is to place your frozen food in a cooler full of ice and set the cooler outside in a shady area or an unheated shed.
Or you can do what our ancestors did to store their food by freezing it in an outdoor ice cache. Here’s how.
1. Pick the Best Spot
The ideal spot for an ice cache is someplace near your dwelling, on the north side of a large structure. This northern orientation will keep the southerly sun from warming up that spot during the day, and in the shade. As a result, your ice will last much longer. The paleo Indians made their ice caches in pits dug on the north side of boulder outcroppings. This provided both shade to preserve the ice and a marker to find the spot again, even in a snow covered landscape.
2. Build Your Box
Once your site is picked, lay out some ice blocks to create a small ice platform. Your food will sit on top of this, rather than the bare ground. Then, using blocks of uniform thickness, build a wall around the foundation. Carve or saw the ice to make each block fit tightly. If you need something to act as “chinking” to fill any gaps, apply slush while the air is sub-freezing. The slush will freeze and fill the gap. Finally, make a slab of ice that will cover the entire structure like a lid. Check the lid for fit, load in your food, and seal the lid on there like some kind of frosty sarcophagus.
3. Have A Security Plan
The hungry scavengers of winter will be very interested in the “abandoned” food they’ve found. Yes, some critters can smell it through the ice. And while most creatures won’t be able to scratch or bite through your icy storage locker, it’s still a possibility. For extra security, bury the ice box in slushy snow and allow it to freeze into one solid block. Then, only humans with tools can break the ice and retrieve the food. If you find that certain creatures keep visiting the box, you could also set up traps to take advantage to the draw.
How you ever tried anything like this? Please tell us your method by leaving a comment.
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