I use a pressure canner for some sauces. That’s usually a version of my Italian family’s “gravy” sauce that has a substantial amount of pork on the bone in it. Because I’m using a pressure canner I can do the saute of the onions and garlic. Sear the country style pork ribs mix all the sauce ingredients and dump everything into the jars and do the bulk of the cooking in the canner.
You are describing oven canning. I understand that is done in places that don’t really have access to canners but the practice has been found through testing to not be safe.
You have the heat turned up to 120 which is high enough to kill botulism spores if kept at that temperature for 90 minutes a liter. But the jars aren’t in a pressurized environment. Since the majority of the contents of the jar is water it will never get above 100 unless you live below sea level.
As long as the onions and garlic don’t have botulism spores and the tomatoes have a pH under 4.6 you are probably going to be okay. Do you have pH test strips?









I reply. I’ve had my address posted, property minorly damaged, people have tried to ruin my business, and in general about half the people here that know my name hate me with a passion. Because I always call out racism when I see it. And, let’s be very honest, these people think they are the smartest people on earth. They get very bitter when cornered and shown to not be.
I didn’t realize how many people were reading but not interacting until the guy from animal control said something seeing me argue with a racist on Facebook. And the “kid” at the hardware store asked if I had pissed anyone off lately. I didn’t even know he knew my name.