Wash all produce and sterilize jars/lids/rings.
Boil tomatoes for 15-20 minutes.
While tomatoes are boiling chop onions, jalapeños, and cilantro by hand or throw everything in the food processor. Place chopped veggies in a large mixing bowl. *See note three.
Allow tomatoes about thirty minutes to cool then remove skins and tops (where stem is). Make sure to strain off extra water and juice.
Blend tomatoes in the food processor or a blender until they are the consistency you desire.
Mix tomatoes and chopped vegetables together.
Add the remaining ingredients and mix well.
Bonus Step: Taste test the salsa to see if you need to add anything!
Fill canner to 3/4 full and allow water to come to a steady, rolling boil while you fill jars leaving ½ inch headspace between salsa and jar lid. Place lids and rings tightly on jars.
Once water in canner has come to a complete boil add jars one at a time to the canning wrack.
Adjust water level in the canner to approximately one inch above the jar lids. Remove or add water as needed.
Processing time begins when the water has come back to a complete boil. Processing time is 20 minutes for pints and 25-30 minutes for quarts.
After processing time is complete, turn off burner heat and allow the canner and contents to cool.
After cooling for several hours, place jars on the counter and allow to seal for 24 hours.
If jars have sealed completely they are ready to store in a cool, dry place for several years. Best freshness is within one year of the canning date. *See note four for unsealed jars.