Frozen Versus Canned: How to Eat Your Veggies in the Winter
Americans don’t seem all that keen on their fruits and veggies, or at least not as keen as they should be, unless we are talking potatoes. And especially when they eat out, Americans are more concerned about proteins and starches, relegating the veggies to mere side dishes, if included in the meal at all.
And then, add the seasonality of fresh fruits and veggies, and we can see that sometimes eating fresh produce is hard to do, especially if you are on a budget or if you don’t want to purchase imported produce that requires fuel and produced more carbon emissions to ship to your local grocery chain. Also, keep in mind that so-called fresh produce was most likely picked unripe (which means that it did not spend enough time “on the vine” to develop all its healthy nutrients) and has been traveling for a week or more before it even gets to your store.
What’s an urban ecoist to do?
Two options are canned or frozen vegetables and fruits. But which is better?
The canning process involves heating, which will kill any microorganisms that may be living on or in vegetables and fruit. It is very rare that a canned product will carry food-borne illness (which has become a problem with fresh produce lately). However, some nutrients withstand the canning process better than others. Vitamin C and folate are two such nutrients that can be lost during canning.
Frozen produce may be a better choice for most fruits and veggies. Produce undergoes freezing soon after it is picked, so
there are less nutrients lost due to age, which may make frozen produce better than some imported “fresh” produce.
Of course, we wouldn’t be very responsible ecoists if we didn’t take some other things into consideration, such as packaging. Cans are highly recyclable and can be reprocessed almost infinitely, but more and more cans are lined with a plastic that contains Bisphenol-A (BPA), which more and more research is showing to leach into foods (especially acidic ones, like tomatoes). Scientists are finding evidence that BPA may cause developmental damage in humans. The EPA is working with some manufacturers to voluntarily reduce BPA use in cans, but I can forecast a day soon when you will be looking for a “no BPA” label on canned goods.
Frozen produce are usually packaged in plastic bags, and the plastic, usually HDPE (#2), used is not as easily recyclable and rarely included in curbside recycling programs. Unfortunately, even the cardboard packaging used with frozen produce is lined with plastic, which also makes it harder to recycle.
Another consideration is where those canned and frozen fruits and vegetables are coming from, and usually that’s a factory farm. Depending on where you live, that can of peas may have traveled thousands of miles to get to your grocery store shelves.

Geez, it’s not easy being green…but if you are serious about it, you may want to can or freeze your own veggies and fruits. When you are at your local farmers market or farm stand this summer, buy larger quantities of fresh produce and process them yourself for winter consumption. Start out freezing fruits like berries, which are easy, and as you become more comfortable and savvy, try your hand at tomatoes.
I remember the cellar at my great-grandfather’s house in Dearborn, Michigan and the shelves stocked with mason jars full of stuff like tomatoes and pickles. He grew everything in his own urban backyard. It’s too bad that as a society, we have become more and more reliant on grocery stores to bring us our produce, when really we could be providing our own — saving money and nutrients at the same time.
fruits, vegetables, healthy eating, nutrition, frozen, canned, produce, carbon emissions, seasonality, BPA, Bisphenol-A, plastics, HDPE, recycling, home canning, factory farm, farmers market, fresh produce, imported produce, EPA, vitamin C, folate
May 19th, 2009 at 10:21 pm
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