How to Store Nuts So They Don't Go Rancid (2024)

Thanks to the bulk dry goods selection at my corner store, my kitchen is a mess of unlabeled, undated, twist-tied bags of various nuts and legumes. I probably bought each one for a good reason once upon a time—a som tum recipe that called for fried peanuts, or a chocolate chip cookie recipe that required just a half cup of pecans—but now they’ve entered a sad, stale limbo of being completely unusable.

If you’ve ever tried to snack on a walnut or almond straight from the pantry, only to find that its texture has gotten soft and mealy (or worse—its oils have turned rancid and begun to taste like paint thinner), it may be time for you, like me, to rethink how you’re storing these ingredients. I talked to an array of pastry chefs, authors, and importers about how to keep those nuts crunchy and fresh for better pecan pies, superior shortbread cookies, and snack mixes.

Can nuts really go bad?

“The fresher the nut, the better the flavor,” says Ahmad Qais Jaweed, the general manager of Ziba Foods, which sells nuts, dried fruit, and other snacks grown in Afghanistan. “Texture-wise they lose their crunch and become softer. Color-wise they might darken a little bit,” he says, describing the flavor as “floury and bland.”

Nuts with higher fat content, like walnuts and pecans can also go rancid after a few months if stored at too warm a temperature. If you notice that your nuts have taken on a noticeably bitter, sour flavor, they may have entered this unfortunate phase.

Even in a baked good, when the nuts are amped up with plenty of sugar and fat, freshness is key. For Maya-Camille Broussard, the author of Justice of the Pies and founder of the Chicago bakery of the same name, fresh pecans are an essential ingredient for a good pie. “If the nuts are stale, you will instantly taste a bit of rancid bitterness in the pie,” she says. “And that’s not cute.”

Nuts make a great snack—but not if they’re rancid.

Photo by Travis Rainey, Food Styling by Joseph De Leo

Buy fresh, whole, raw, and local

Broussard suggests buying locally, straight from the farm if at all possible. Since nuts are harvested in the fall, buying them in the middle of the summer might mean that you’re getting last year’s crop, which won’t last as long in your pantry. And if you’re buying from the grocery store, this is one of the cases when you really want to pay attention to that expiration date.

How to Store Nuts So They Don't Go Rancid (2024)

FAQs

How to Store Nuts So They Don't Go Rancid? ›

The good enough method: Put nuts in a glass container, ideally one with as little empty space as possible. Store sealed nuts in the freezer. “Keeping nuts at freezer temperatures dramatically slows down the rate that oxidation occurs,” says McNeil.

How do you store nuts so they don't go rancid? ›

The Best Way to Store Nuts

The refrigerator, yes, but specifically, LaMarita recommends refrigerating nuts in air-tight glass jars. Store any extra nuts in the freezer in the bags they came in, he says. (If you don't have the original bags, consider using a freezer-safe air-tight container instead.)

How do you prevent rancidity in nuts? ›

However, you need to make sure that the pantry is cool, dark, and dry, as high temperatures, light, and humidity can speed up the rancidity process. You also need to keep the nuts and seeds in airtight containers or resealable bags to prevent exposure to oxygen and insects.

How do you increase the shelf life of nuts? ›

Avoid storing nuts near heat sources like stoves, ovens, or direct sunlight. Instead, choose a cool and dark storage location to extend their shelf life.

Can rancid nuts be saved? ›

Once the oils in nuts go bad and they become rancid, there's no fixing them.

Can you store nuts in plastic containers? ›

When choosing a container, use one that is airtight. You can use Tupperware, plastic baggies, freezer bags, or even mason jars. Glass and plastic containers are preferred over plastic bags. Since plastic bags are permeable, it is easy for odors to seep into the bag.

Do nuts go bad if sealed? ›

Store sealed nuts in the freezer.

Overbay estimates that most nuts will stay fresh for at least a year if properly stored in the freezer. Opt for freezer-safe glass if possible; Schaich avoids using more porous plastic containers because nuts can pick up smells from other foods.

How to stop walnuts from going rancid? ›

You can store them in the original packaging. But, realize that strong odor like fish, cabbage, onions can be absorbed by the walnuts. If you'll be storing them longer than a month, go ahead and store them in the freezer. Once you open the bag, transfer walnuts to an airtight container to maintain freshness.

Should I keep nuts in the fridge? ›

Nuts. Nuts' fragile unsaturated fats can go rancid quickly. While that may not hurt your health, it can definitely be bad news for flavor. Keep nuts tasting fresh by stowing them in a sealed plastic or glass container in the refrigerator for four to six months.

What is the best container to store nuts in? ›

Nuts should be stored in their own airtight containers, such as glass, ceramic, or sturdy plastic containers.

Can nuts go rancid in freezer? ›

Whole raw nuts can be stored in the freezer for up to one year. Chopped nuts, ground nuts, or nut flours — all of which contain more surface area for oxidation — are quicker to spoil and should only be stored for up to six months.

How do you revive rancid nuts? ›

If a nut is only slightly stale, says Kanney, it can usually still be toasted to revive some of its previous glory and (crunch). However, Kanney says, “If a nut has spoiled or gone rancid, recognizable by a sour or bitter flavor, the nut is no longer good and should be thrown away.”

How to store nuts for long term storage? ›

Light exposure can also deteriorate the fats in nuts, so storing them in a dark environment or opaque containers can prolong their storage duration. Similar to other perishable foods, storing nuts in a cooler location is important.

How long does it take for nuts to go rancid? ›

The general rule is that most nuts retain quality for a few months. However, this does not mean that nuts will remain in good condition for an extended period. Shelled nuts stored at room temperature are expected to last six to nine months. Non-shelled nuts will last for four to six months.

Why are rancid nuts bad for you? ›

Consuming rancid or stale nuts like almonds, walnuts or cashews in small amounts may not immediately make you sick, but it's generally not advisable as it may hamper digestion or have other harmful effects on your body in the long term.

What is the best thing to store nuts in? ›

The good enough method: Put nuts in a glass container, ideally one with as little empty space as possible. Store sealed nuts in the freezer. “Keeping nuts at freezer temperatures dramatically slows down the rate that oxidation occurs,” says McNeil.

Is it better to store nuts in the refrigerator or freezer? ›

To keep your nuts tasting their best and lasting for a while, we recommend storing them in an air-tight container in your freezer. Most nuts should keep for up to 1 year when stored that way. Label your container with what's inside as well as the day you store it and your preferred "use-by" date.

Can you eat nuts 2 years out of date? ›

Q: Do Nuts Expire? A: Nuts can't expire; however, they can change in taste or go rancid. Nuts contain much-unsaturated fat, an oil that makes nuts likely to go rancid.

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