Cook onions in a pan over medium heat until they are softened and set aside. Add ingredients to a stock pot and bring to a boil then simmer on medium low for 30 minutes or until the salsa is reduced and slightly thickened. The mixture will thicken more once cooled.

Remove the skins from the tomatoes by pouring boiling water over them and letting set for a minute then rinsing under cold water and the skins should slip off. whatever doesn't come over remove with a paring knife.

Add all ingredients to blender and blend, If you want a chunkier salsa leave half of the ingredients out of the blender or skip the blending step.

Add ingredients to a stock pot and bring to a boil then simmer on medium low for 30 minutes or until the salsa is reduced and slightly thickened. The mixture will thicken more once cooled.