Here’s the second, concluding part of my notes on food waste.
When thinking about food waste, it’s easy to just peg it to the value of the food. This past year was the first time I really had to buy my own groceries. Multiple times, I messed up and didn’t store food properly, or bought too much of it and didn’t eat it fast enough before it got moldy. So when I was throwing away half a bag of green-splotched bagels, my thought was, crap, that’s like two bucks just gone. However when I realize that the faucet has been running all day, I think, crap, that’s a waste of water and energy for water treatment, because I’ve internalized that as the framework to understand water usage. Food waste isn’t a problem because of the dollar value, it’s a bunch of energy expended for no reason at all. So, to throw another analogy at you, it’s not like buying a sword in a video game, and then losing that sword when you die, and having to buy it again. It’s like buying a sword in a video game, and then losing it when you die, and then having all of the assets and coding for that sword deleted from the game, so that the developer has to redesign it and release a patch so you can buy the sword again. I don’t participate in the production of food, so it didn’t hit home to me all the labor that I was throwing in the trash with those bagels—I only knew the value of it as a consumer.
It shouldn’t be surprising that in developed countries, about 30-40% of food waste occurs at the consumption level, which is everything from household meals to restaurants. In restaurants, there are the same problems as at supermarkets re: over-stocking and expiration dates. In households, most cases of food waste can be broken down into a few categories, as outlined in a study of 14 lower-middle income Brazillian families: “(1) excessive purchasing, (2) over-preparation, (3) caring for a pet, (4) avoidance of leftovers and (5) inappropriate food conservation. Several subcategories were also found, including impulse buying, lack of planning and preference for large packages.” So let’s break these down.
“Excessive purchasing” is exactly what it sounds like—buying more food than is need, and more food than can be consumed before it goes bad. Ironically, this over-purchasing is often the result of buying in bulk in an effort to save money, or taking advantage of sales or BOGO bargains even when the family already has enough of the product at home. So the savings may be negated by the amount of food wasted. Excessive purchasing is also linked to unplanned shopping excursions—going to the store without a list, as “Only two of the 14 families studied prepare shopping lists.” In a 2012 study on national shopping trends in the US, the Hartman Group found that 69% of women make a list before shopping at a grocery store, and only 52% of men do the same.Read More »