There is minimal negative impact when you can your own food. For one, it reduces the waste caused by pre-packed foods; remember, those mason jars are reusable. Your tomato sauce is only traveling from the garden, to your counter top, then to the pantry instead of thousands of miles across the country on a truck . You can also get a lot of great compost material from the canning process.
Buying produce in season when it is cheap and plentiful for preserving can be an economical way to stock the pantry. That is another reason I make delicious jams from scratch – you may be surprised to know that those decadent jams that you drool over in the local upscale kitchen store can be very pricey.
These are just a few examples of why canning is an eco and financially friendly process.
see you in class