Hi Cheryl. Thanks for your question. The reason is two-fold. First, you want to salt your veggies to pull some moisture out and help them to stay more crisp after canning. (You’d do something similar if you were pickling cucumbers.) Second, you need a hot liquid to can your salsa in. We hate to throw away the flavorful juice. So, instead of using water or a store-bought can of tomato juice to create the liquid, we just recycle the juices that were already in the tomatoes.
Use your jar lifter to place the jars into the canner leaving space in between them. Once jars are all in canner, adjust the water level so it is at least one inch above the jar tops. Add more boiling water if needed so the water level is at least one inch above the jar tops. When adding water, use the hot water from the small pot your lids were in. Pour the water around the jars and not directly onto them.
1 Sterilize jars and lids in water bath: Place steamer rack in the bottom of a large (16-qt) stock pot or canning pot. Place new or clean mason jars on the rack. Fill the jars with water and fill the pot with just enough water to come to the top of the jars. Heat water to a simmer. Simmer for 10 minutes. (Keep the jars warm while preparing the 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 !!