6 lbs tomatoes 1 red onion finely chopped 1 white onion finely chopped 1 yellow onion finely chopped 3 green peppers finely choped 5 jalapenos chooped (or other hotter peppers) 3 6oz cans of tomato paste Salt & pepper to taste
Simmer it all for three hours uncovered (further cooks out moisture). Then can in hot water bath for 15 minutes.
After a batch or two you should have it figured out.
its hard to mess up salsa, my wife makes and cans ours and adds stuff like corn or black beans. She ad-libs alot and it never turns out bad.