Now, when I know the risks of canning I don't want to take a chance with anyone's health. That's why I freeze my homemade tomato sauce instead of canning it. The sauce has to be put away within 2  hours of cooking. It is safe in the freezer for a very long time but to maintain its best qualities and taste it's recommended to be consumed within 6 months. I know it is considerably shorter time slot compare to canned products but I don't see it as a problem as I always use my frozen tomato sauce within a few weeks.