I lived off-grid for around 15 yrs in a 4 season province. I shot deer, killed my pigs & chickens, rabbits & game birds which I snared. For the deer, it was stored in large buckets with salt peter added to the water. (military used to put it into food to keep men from fornicating with each other) You soon get sick of the flavour, but soaking the meat in lots of garlic & wine will remove a lot of it before you BarBQ it.
One of the types of bacon we used to make in Hungary is cured in salt, lots of cloves or garlic & ground sweet paprika rubbed ontop. This is bacon that has no streaks of lean meat in it. Look in old cookbooks. It is one of the 3 types of amazing bacon we make. Ground meat with very specific amounts of salt, paprika, & a few other spices make La'ngold Kolba'sz & you hang it over broom handles in a root cellar temp space & slowly all the fat drips out & the sausage shrinks, dries & becomes similar to peperoni but WAY better. Better than jerky but same idea...slow drying at constant temps.
If you boil meat that is mostly bony, like pork hocks etc, then place the hand sized pcs into bowls, then pour that water over the meat, put in a cool place, the broth will become hard aspic which will keep the meat a bit longer than otherwise...again bit of salt, garlic & paprika cooked into the water is the flavouring. Then removed. Both spices small in size but big in flavour!!!
If you want to keep fish, you must keep a clean cloth ontop of the bucket of water that they are submerged into & each day remove the fat that comes out of the fish & wash out that cloth or it will go rancid. Or salt & dry like people in NL & Labrador did. You have probably seen small wide mouthed bottles of fish in the supermarket not far from Saur Kraut.
If you 'can' meat or low acid veg. in mason jars you have to do them in a pressure canner not just a regular canner because those DO NOT get hot enough completely thru to the very center of the food itself. Remember that food born poisons are invisible, unlike a bit of mold on jam or a glass of chillie that explodes. Read Keeping The Harvest, once sold thru Harrowsmith.
Storing vegetables in sand, or wrapped in paper or wood chips still works. I still live without a fridge cus I prefer to buy real estate than make companies wealthy. I store food in large containers with egg cartons etc below & above stuff which is out of plastic, wrapped in T-towels or papers. All veg & fruit need to gas-off their moisture but not completely. Deep holes are nice and cool. Way up high in evergreen trees also...and protect food from rodents except maybe squirls.