An open white trash can on a blue backdrop with food waste artfully spilled out
Liz Galst 2 minute read

How to save money and help the planet by wasting less food


Here’s a startling fact: Between 30% and 40% of the food produced and sold in the U.S. goes uneaten.

That’s one in three loaves of bread. One in three bananas. One in three Pop-Tarts. 

That represents a lot of wasted money, energy and water. And because wasted food usually ends up in landfills where it decomposes without oxygen, it generates a lot of methane, a dangerous greenhouse gas. 

Whether we’re buying more than we need or forgetting about what’s in the freezer, here's how to cut down on food waste.

Shop smarter

A person pushing a shopping cart down a grocery aisle
Before heading to the grocery store, check out what you have at home and want to use up. (Getty)

“Shop your kitchen first before you go to the grocery store or the farmer’s market,” says Mei Li, co-author of the charming new cookbook Perfectly Good Food: A totally achievable zero waste approach to home cooking

In other words, check out what you’ve got in the fridge and your cupboards before buying something new. And, to avoid over-purchasing, put together a weekly dining plan and shopping list that helps use up what you’ve got on hand. 

A note to impulse buyers: Sale items and bulk buys are only worth it if you’re sure you’ll use the extra food. A bargain is not a bargain if it ends up in the trash.

Store better

Leftovers in the refrigerator stacked in clear containers and labeled with dates
Clear, labeled containers can help you know what to eat first. (Getty)

Li’s a big fan of good organization, starting with the shoe-box-sized “Eat Me First” box she keeps at eye level in the fridge to help her find the food that needs the most attention. 

“These days, I always have half a lemon that needs using up. But before the ‘Eat Me First box,’ I had four half-lemons hiding in various locations and inevitably a few of them would go bad,” she says. 

She also recommends creating zones in the freezer. “Knowing the leftovers are in one section, the meat is in another and the vegetables are in a third makes using things up easier,” Li adds.

It’s not just where you store your food that’s important. It’s also how. Keeping flour in the freezer extends its life. A slice of brown bread can re-soften hardened sugar. Shaking water from fresh produce slows degradation. The internet abounds with tips on storing, preserving, freezing and more. 

Freestyle it 

Don’t get hung up on recipes, says Li. 

Two generations of cooks working together over a sink
You can adapt lots of recipes to use up what you have on hand. (Getty)

“People feel like they have to follow recipes to the letter. But think about food in categories — leafy greens, grains, different kinds of proteins," she explains. "You can switch one food in a category for another — collards for kale or cabbage. If the recipe calls for 2 cups of vegetables, but you’ve got more, you can use two and a half.” 

If you’ve got ingredients you don’t know what to do with, punch their names into a search engine and see what recipes come up. At the week’s end, you can make stew or soup from whatever’s left in the refrigerator and freeze portions for next week’s lunches. Or have a fridge forage night, when you eat whatever’s left over. 

Think before you toss

Keep food waste out of landfills. Your municipality or a local community group might offer composting. 

Someone pushing food scraps off a cutting board into a compost pail
Compared to throwing food waste in a landfill, composting can reduce methane production by 38-84%, according to a new study. (Getty)

Try a home composting bin or wormery, and watch your scraps turn into rich, garden- (or plant pot-) ready compost in weeks. 

Coffee grounds, eggshells and citrus peels can go straight into your garden, serving as mulch, aerating soil and keeping slugs at bay. Check out the and other online resources for more composting know-how.  


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