We live at 495 meters/1621 feet above sea level. I learned how to jar fish, from the fellow who always wins the blue ribbon at the fall fair. Use your fave recipe: a slice of onion on the jar bottom, the amount of salt you like, (1.7-2.3% of weight) a dollop of ketchup on the bottom, smoked first, then jarred.
THE KEY: sterile jars, clean product, good seals, and for our elevation we process at 18 pounds on the gage, for 90 minutes. The 10 pound folks are welcome to their product. I'd rather not eat theirs from this altitude.
At our elevation, water boils at 209 degrees F.
At sea level, 10 pounds is 240 degrees F. 15 pounds is 257 degrees F. Up here, less.
A reminder: it's going to take clock time to reach pressure. The timing begins ONCE PRESSURE IS REACHED. Timing stops when the alloted time block has expired. This means the actual time in the pressure cooker is longer.....by the amounts of time to reach pressure, and the time to come down to a safe "release" pressure.
Contact the Wells Can Co. in the lower mainland, for a copy of the manual that comes with their stocked brand of pressure cookers. If memory serves, it's about 10 dollars. Cheap insurance. They are in BBY. phone, etc, on the web site.
http://www.wellscan.ca/cdn-site/index_canada.htmhttp://www.wellscan.ca/cdn-site/pcanners_cdn.htm