8. Bag Tomato Sauce
A jar of tomato sauce only lasts about 5-7 days in the refrigerator once it’s opened. If you want to increase its shelf life, freeze it.
Just place your favorite fresh sauce into a freezer bag and freeze for an hour. Next, remove the bag from the freezer and use the back of a butter knife to separate the sauce into even squares of individual portions before returning to the freezer. Make sure not to damage the bag during this process.
When you need sauce, just snap off a square to thaw and refreeze the bag for future use.