Hey Terry – just keep in mind that it isn’t recommend from a food safety standpoint to keep the jars at room temperature (on a shelf) without properly processing in a water bath, steam bath or pressure canner. Simply letting them seal from the heat of the salsa doesn’t preserve them properly. You can google some of the reputable canning guides for more information but I want to make sure I give that disclaimer so no one gets sick and comes back to blame me. 🙂
And now a white boy from Scandinavia wants to tell you how to cook Mexican Food? Yeah, listen, I know how silly that sounds. But here’s the thing. Mexican food is as much of a state of mind as it is a type cuisine: it’s about forgoing the shredded cheddar cheese, the hard-shell tacos, the ground beef and the spice mixes. It’s about exploring the ingredients and key elements of the Mex part of the Tex Mex equation and about producing something that would be recognized as original and not foreign. And in my 15 years of research, I believe I’ve achieved just that.
As with all canning recipes, this recipe has been developed and tested specifically to make sure the pH level is safe for canning. Don't alter the amount of acidity (vinegar). You CAN substitute some of the vinegar for bottled lemon juice if you want to play around with flavor. Dried spices won't affect pH, so you can also experiment with those, but the amount of vegetables and tomatoes and acidity need to stay the same. I have not canned this recipe in a pressure canner, but I have given details in the post above about steam canners vs. water bath canners. Please do your own research to decide what method is best for you.
Oh p.s I ran out of tomatoes – totally misjudged how many I needed for a double batch – so I had to run to store for more.  Instead of getting fresh tomatoes, I just got canned crushed tomatoes,  and drained them in colander.  So my salsa was half fresh tomatoes, and half tinned,  and it was super yum.  Next time I’ll just use tinned (never as good,  I know)  when Im lazy and can’t be bothered skinning the tomatoes.  
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 !!