Water bath canning involves submerging the jars in boiling water for a set period of processing time. It is suitable for high acid foods. Pressure canning (not pressure cooking) involves processing the jars in a sealed pressure canner at elevated temperature and pressure. You must can all low acid foods. You can can high acid foods, but most people just water bath can them. Some folks prefer dealing with the steam over dealing with a big pot of boiling water, which is why I give both options for this recipe. It is heavy on tomatoes and also has added vinegar, which should keep the pH below 4.6.
Update: Because I was paranoid about the peppers, I actually could have upped them a smidge. OTOH, right now it has a gentle heat which won't burn you out after a couple bites. I did lie though. I omitted the celantro because I am one of those whose tastebuds interpret it as soap. Something tastes like it needs a little more of something, but possibly I mis-measured because the taste is wonderful..I might not whirl the tomatoes quite as much next time though. Boy, this a long comment to basically say Brava.
The price of jars has gotten ridiculous. I blame the home decorating trend that uses mason jars. Whenever something gets trendy, prices go up. It used to be that I could pick up jars at the local thrift stores for 25 cents each. Now, they want a dollar or more for those same jars. I can buy new at the local hardware store for less than that. It drives me nuts.
I just made this wonderful salsa a couple of days ago with roma tomatoes. I 4X the recipe and ended up with 32 pints of salsa. We liked it so very much I am thinking of doing more with the 1 1/2 bushels of regular tomatoes that I have. Do you think that the regular tomatoes would have too much liquid in them or would the draining take care of that problem? I didn’t add the paste last time so I would probably add it for sure to make it thicker.