The founder of MOM's Organic Market and his family ate food that was past its labeled date for a year to make a point: Expiration dates are not representative of freshness or threat, and they contribute to Americans wasting billions of dollars of perfectly good food every year. See photos of some of the expired food consumed.

Nash consumed this beef 15 days past the expiration date. Courtesy Scott Nash Nash said this tub of butter got moldy sitting in his fridge for "months and months," but he still scraped of the mold and cooked with the butter. Courtesy Scott Nash Nash used this buttermilk on pancakes when it was almost four months past the sell by date. Courtesy Scott Nash The same buttermilk was then used almost a month later. Courtesy Scott Nash Nash used the whipping cream for a pie almost two months past the cream's use by date. Courtesy Scott Nash This batch of whipping cream was consumed more than three months past the date posted on the carton. Courtesy Scott Nash This cream was consumed in coffee two months after the sell-by date. Courtesy Scott Nash Nash consumed this broth in soup more than three months after the "best before" date. Courtesy Scott Nash These wheat tortillas were consumed a full year after the best by date. Nash said they were stored in the fridge and made great quesadillas. Courtesy Scott Nash Roasted tomatoes were consumed seven months past the sell-by date. Courtesy Scott Nash Onion bagels were kept refrigerated and consumed almost a two months after the sell-by date. Courtesy Scott Nash Nash consumed this yogurt a month after the date on the product. Courtesy Scott Nash Nash used this pesto in a pasta dish seven months after the sell-by date. Courtesy Scott Nash This product was consumed four months after the date on the package. Courtesy Scott Nash ( 1 /14) Share This Gallery: Share on Facebook. Share on Twitter. Share via email. Print.

WASHINGTON — Scott Nash ate yogurt that was 180 days past its “best by” date, and he lived to tell about it.

The founder of MOM’s Organic Market and his family ate food that was past its labeled date for a year — including dairy, produce, meats, fish and packaged food — to make a point.

Expiration dates are random and not representative of freshness or threat, and they contribute to Americans wasting billions of dollars of perfectly good food every year.

And they aren’t actually “expiration” dates at all, though that is how consumers perceive them.

“Some stuff is damaged, and that’s legitimate, and some stuff really does go bad. But a lot, most of the food that gets discarded is due to these arbitrary and confusing dates,” Nash said.

He calls it “consumer anxiety disorder” over food safety.

“They are very vague. What does ‘expire’ mean? There is ‘best by,’ there is ‘sell by,’ ‘best if used by.’ I just think that there is no consistency, and that it is creating confusion,” Nash said.

Labels like “sell by” and “use by” are quality dates only.

Except for infant formula, dates on food products are actually not required by any federal law or regulation. Manufacturers and producers use them to indicate what they consider their best quality window.

In most cases, you’ll know

The Food and Drug Administration, which agrees expiration dates lead to unnecessary food waste, does say any food that is obviously spoiled — abnormally soft, discolored, moldy or has a strong unpleasant smell — should be discarded, no matter how properly or how short a time it has been stored.

People do get ill from eating food that has gone bad, but your best judge is appearance, texture and smell, and in most cases, you’ll know.

Andrea Goergen, a registered dietitian and nutritionist at MedStar Washington Hospital Center, agrees.

“It is very important to make sure that you use your senses. If a product is technically good but looks, smells or tastes spoiled, err on the side of caution and throw it out or compost it,” she said.

Nash used common sense, a nose and his eyes and ate things, just based on their age, that most wouldn’t even consider.

“I ate some tortillas that were a year past date. Some of the meats I ate were quite a few weeks past date,” Nash said. “I ate heavy cream that was a few months past date. I ate yogurt that was seven, eight or nine months past date.”

Arbitrary labels not only lead to food waste, but also cost grocers money. And not just the big grocery chains.

“I probably spend an hour a day checking dates,” said Karl Hirschhorn, who owns small neighborhood grocer Open Door Market on California Street in Northwest D.C.

“It’s a pain and it is customer perception. If I put a jar of peanut butter on the shelf with a label that says it is good for 15 months, and I get another delivery and put the new delivery at the back of the shelf, customers will dig to the back to get that one,” he said. “It is the same with short shelf items like milk as well.”

“I won’t put out new eggs until we sell the other ones. Customers will keep pushing them to the back until the eggs crack,” he said.

For Hirschhorn and other grocery retailers, some of it means a loss, but not always. Some products are guaranteed sales by vendors, like bread. The delivery driver decides how much bread to put on the shelves, and is usually responsible for rotating it out.

The “FoodKeeper” reference

The U.S. Department of Agriculture, Cornell University and the Food Marketing Institute have developed a guide to how long virtually every food will keep, whether in the pantry, refrigerator or freezer. The FoodKeeper is available both online and as a mobile app download.

It is estimated that between 30 and 40 percent of food in the U.S. goes uneaten, meaning Americans discard $165 billion in food annually.

Nash, who started the MOM’s Organic Market chain in Rockville more than 30 years ago, would like to see consumers pay less attention to dates and more attention to common sense, and to be conscious of needless food waste.

“I do all the cooking for my family, and if you come to dinner at my house, I guarantee you’ll be eating at least one thing that is past its date,” he said.

As for his experiment, some of the dating was outright comical, like a container of sea salt described as “formed by the primal sea more than 250 million years ago.”

“Just my luck, 250-million-year-old salt and it expires next year,” Nash wrote on his blog.

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