I use a two burner propane camp stove..run two All-American canners at once.
PLEASE, PLEASE, PLEASE DON'T try "outlaw canning"! I'm not talking about pressure canning pumpkin puree or other "previously recognized as safe" (using land grant university test kitchens) techniques. Some of those have been revised due to the *very large" margin of error USDA insists on...given the average intelligence of humans these days, I can't say they are wrong!
But water bath canning meat or low acid veggies simply isn't ever going to be safe. It can be "safer" if you are extremely OCD about cleanliness but all it takes is a small smear of garden soil (that just happens to contain a couple botulism spores), and you’ve got a jar full of one of the most dangerous toxins on Earth. Even better, it will look, smell and taste identical to the non-contaminated jars.
But even if you've done it for years, NEVER can potatoes or any root vegetables (carrots, beets, turnips, etc) unless you use a pressure canner. I'm surprised it doesn't make the National News, but every couple of years, the Amish will have a bunch of people in the ICU (usually one or two die) after they serve a cold potato salad made from home-canned potatoes, at a wedding or funeral dinner.
It requires a minimum of 30 minutes at 250° Fahrenheit to kill botulism spores. You simply can't reach that temperature in a boiling water bath. Canning any low acid food that *ever* touched, or was contaminated by, the soil, in a water bath is like playing Russian Roulette with several bullets...
And for those who "break the NEW rukes" and can pumpkin puree or other products, using "official" times from backing the 1970s...just be a stickler for detail. Make sure your canner has fully vented for the required 15 minutes before putting the weight on to start building pressure. (This makes sure that ALL the food in the jars is fully heated to 212° at the center of the jar, or the center of each chunk of meat)
Start timing when the gauge reaches 11# pressure (and if you are above 1000 feet above sea level, set it at 15#), and DON'T let the pressure drop below the minimum for the entire required time.
It's not difficult, but there are valid scientific reasons behind the rules. Be safe!
Summerthyme