This year I used a traditional pressure canner, make and model unknown due to the age of it. I jarred a dozen quart jars of spaghetti sauce and two dozen quart jars of salsa. It was my first time. My salsa is getting better with age, however, my spaghetti sauce did not turn out as delicious as it was before jarring. out of everything I jarred, only 2 quart jars did not seal properly.