I’ve never attempted to use canned tomatoes in the recipe, and can’t remember the last time I purchased store tomatoes, so I’m not sure how much liquid is in there in proportion to the fruit. My best guess to make this work would be to drain the tomatoes and then weigh them – but this would be a little high since the starting weight with raw tomatoes includes skins, seeds and excess juice that’s removed/drained off. Maybe around 16-80 pounds drained tomatoes? When I’ve drained my tomatoes after chopping, I end up with around 7 quarts in volume. There is no simple answer, unfortunately. If you give it a go, you may way to get pH strips to test the finished salsa and make sure the pH is below 4.6 for safe canning. If not, you could freeze, or add more vinegar.


One can indeed use a pressure canner for canning salsa . I always use Roma tomatoes and never use the tomatoe paste (optional) in the recipe . It never turns out to liquidity or mushy ,not ever . Very certain the reason for that is the Roma’s are a meaty tomato. I have tried the water bath method as well with this recipe , both have the same consistency. I pressure can at 10 lbs. of pressure for 15 min. Adjust lbs. of pressure for your elevation .
Douglas, I was just wondering about using the iron skillet or comal and the tomatoes. I tried a different recipe the other day and used my iron skillet to toast the ancho chilies, tomatoes and serrano peppers it called for. After blending all the ingredients, I used the same skillet to heat and cook the finished sauce. I only thought about it after the fact and wondered if the acidic sauce changed in flavor by using the iron skillet. I am sure our grandmothers used their iron for everything and never worried about the acid in them, so I am sure this question is moot, but I still want to know. I am not a very good cook, even though I try, and last weeks sauce did not turn out very tasty. I am going to give this one a try and hope it comes out better. Thank you for posting this.
Well first off I took your advice and bought a Breville Food processor ….I love it. Then I made your salsa recipe …. then I made more ….made over 50 pints and have about 12 left. I give it to everyone … then they want more. What a wonderful recipe ….I have given to people at work and then others come and ask me if I have more. yesterday I went and got 4 more bushels of tomatoes and here I go again. Thank you for the good tips and wonderful recipe.
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. 
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