Problem: Low Acid Foods – The trick to canning shelf-stable foods is the acidity. If you have the right amount of acidity, it creates an unpleasant environment for dangerous botulism bacteria to grow. When canning low acid foods such as green chiles, you need to either can them under pressure (using a pressure-canner), or if you use a simple water-bath canning process, add enough acidity to prevent bacteria from growing.

I started hunting around for recipes, and came up with several that looked promising, but the one I settled on was from I just checked the link, and they’ve changed the recipe that’s posted, but I’ll be sticking with the one I have. This makes a mild homemade salsa. In 2013, we made seven batches of home canned salsa. The “boys” love salsa, even now that they have grown up.
Since many of you have asked about a weight measure for the 10 cups of tomatoes, as I’ve been canning the salsa the last few days, I’ve done a little experimenting/research. Basically, I’ve found it varies GREATLY depending on variety. When I used SIX pounds of Roma + every day garden tomatoes, after taking the skins off, lightly crushing, and draining, the yield of tomatoes to use in this recipe was about 2 1/2 cups. When I used TWO pounds of only Roma/paste tomatoes, after taking the skins off, lightly crushing, and draining, the yield of tomatoes to use was a little over one cup. I tend to err on the side of over draining the tomatoes, if anything, so that makes a difference as well. For me, because I usually use paste tomatoes in this recipe, I would plan on around 18-20 pounds (give or take) of Roma/paste tomatoes to get the 10 cups for this recipe…and even more if using tomatoes with a higher water/lower flesh content.
Salsa very rarely causes problems or spoils (and I’ve known people to ‘create’ their own canned recipes that are WAY out of balance), so no cause for freaking out, Christina! That said, I always like to err on the side of safety, which is why I talk about it and do my best to make sure my recipes are safe. Your ratios sound okay (and any type of vinegar is fine, as long as it’s 5% acidity), since you use more tomatoes which are higher acid and less low-acid things like onion and peppers (did you add garlic?) and your ingredients are all less than half to match your vinegar, so go ahead and enjoy your salsa. 🙂
I added a tea spoon of fine ground hot pepper. now thats the slight hot I like and no tomato paste. I like it wet …Great recipe. the first time I ever made salsa and I am glad I found the perfect recipe.. on top of it all. its just like a recipe of a so called semi friend. that had his own recipe I liked and he wouldnt give it up. well ..he can bite this. now!! I got it. if not better ..ha ha !! you and your grand mother knew your stuff… Thanks !!