I wonder if, first snow of the year, someone built an igloo out of large, well packed blocks, it would serve as a fridge/freezer until the weather warmed up. Mostly for meat, vegetables are better stored in a root cellar as they aren't nearly as calorie dense as meat, and will keep fine there until spring with some skill and tricks, like the old tomatoes in ash one, you know.
Who needs a freezer in summer anyways, there's plenty of fresh food to be had in the summer, winter is more the season for eating meat I feel. At least, it tastes nicer then. I figured I could go on a hunt about the time of the first snowfall, kill some large and tasty animal, drag it home, then cut it up and pack it in snow in my igloo-freezer. A second one could be built for use as a fridge, without the snow pack and perhaps with a small candle inside to keep it above freezing, for cooked meat and fish basically.
Plastic bags would probably need to be employed for maximum results and keeping pest animals out of the meat. But they could be reused ad infinitum with some care at least. Buying quality ones in the first place would sure help.
Oh yeah, side note, I read that back in the day old time hunters would carry potatoes or some other starch hunting with them and let their dogs have a feast by cooking them and bleeding out the animal over it. I don't like the taste of blood and it's hard to safely transport anyways so this seems like a great alternative to wasting it.
A google search of this idea turns up nothing but pages and pages of ads for igloo brand stuff, lol. Still, I suspect Inuits, Sami, etc. probably do it, and it's not my own original idea, haha. Maybe that's where I heard of it actually. But I also think it would work well outside of the Arctic in the more northerly temperate climates.
I think this could be the RMH of cold, and food preservation. It takes zero fuel and not too much skill or time or effort (yes I've built an igloo before, and not a bad one I might say, I was impressed with myself anyways). My best idea before this was sun drying the meat and making soups, stews and stocks out of it, but this is way better if it works, because stock with some chewy bits of rehydrated meat in it isn't nearly as nice as juicy, sliceable roasts.