Nuts Belong in the Freezer, Not the Pantry (2024)

The pantry won't protect their oils and keep them fresh.

Published on January 10, 2023

Nuts Belong in the Freezer, Not the Pantry (1)

You stocked up on nuts for all your holiday cooking and baking projects, and are now left with piles of pecans, pistachios, walnuts, cashews and almonds. These nutrient-packed morsels are expensive, so proper storage is key to keep them tasting sweet and nutty until you’re ready to whip up a pie, brittle, pesto, cookie or snack.

Nuts are loaded with healthy, yet delicate, oils that spoil over time. If you’ve ever tasted a rancid peanut, you can attest to how a once toasty, creamy nut can quickly turn bitter and acrid. Luckily, extending a nut's shelf life is easier than you think, and no special equipment is required. Here are some tips for extending the shelf life of nuts.

What makes nuts go rancid?

The simple answer is their oils. Nuts are packed with oils in the form of healthy unsaturated fats. These “good” fats have many benefits, such as lowering cholesterol and triglyceride levels. However, unsaturated fats, also known as “incomplete” fats because they contain carbon bonds without hydrogen atoms, are chemically unstable, making them prone to oxidation. Exposure to oxygen causes the fats to go rancid, giving them a stale and sour taste.

Why the freezer is best

When storing nuts, the freezer is your friend. This dark, cold space slows the deterioration of the nut’s oils, a process that directly impacts flavor. Light, oxygen, and heat are the enemies of nuts. Storing them in an airtight container in the freezer helps to limit their exposure to all three of these elements and slow the rate of spoilage. Another reason why the freezer works so well for storing nuts is the fact that nuts have a low water content, making them less susceptible to freezer burn than meats or vegetables. They can be kept in the refrigerator with many of the same benefits, but will only stay fresh for about half as long as if they were stored in the freezer. Due to their tendency to absorb odors, nuts should be kept in an airtight container away from pungent ingredients like onions and garlic.

How long nuts last in the 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. Roasting nuts, which alters the chemical structure of the oils and makes them more susceptible to oxidation, also expideates deterioration, so roasted nuts should only be stored for up to six months. The best part about storing nuts in the freezer is that there is no need to thaw them. Nuts are ready to go straight from the freezer to a salad, cookie or muffin.

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Nuts Belong in the Freezer, Not the Pantry (2024)

FAQs

Should nuts be kept in the freezer? ›

Store sealed nuts in the freezer.

“Keeping nuts at freezer temperatures dramatically slows down the rate that oxidation occurs,” says McNeil. Overbay estimates that most nuts will stay fresh for at least a year if properly stored in the freezer.

Should nuts be stored in the fridge or pantry? ›

Tips to Safely Store Nuts. Contrary to popular belief, nuts should be stored in the fridge or freezer as opposed to a room temperature pantry. Why? Because nuts contain a high amount of unsaturated fat, a delicate type of oil, which makes them highly prone to going rancid.

What nuts need to be refrigerated? ›

Store nuts and seeds at room temperature for 3 months, fridge for 6 months and freezer for a year. Label containers with the date of purchase to keep track of which to consume first. Pecans, peanuts, and walnuts spoil faster, store them in the fridge first if space is limited.

How long can you keep nuts in a sealed container? ›

When your refrigerator stash is running low, it's time to "refill from the freezer to the jars in the fridge." Stored in a sealed container in the refrigerator, nuts will last for four to six months, according to the Academy of Nutrition and Dietetics. Meanwhile, in the freezer, they'll last for at least one year.

Can you eat nuts 2 years out of date? ›

A: Nuts can't expire; however, they can change in taste or go rancid.

What happens if you don't refrigerate 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.

Can nuts be stored in ziplock bags? ›

CONTAINERS. When choosing a container, use one that is airtight. You can use Tupperware, plastic baggies, freezer bags, or even mason jars.

How do you store nuts to last longer? ›

They can be kept in the refrigerator with many of the same benefits, but will only stay fresh for about half as long as if they were stored in the freezer. Due to their tendency to absorb odors, nuts should be kept in an airtight container away from pungent ingredients like onions and garlic.

What is the best container to keep nuts fresh? ›

Nuts should be stored in their own airtight containers, such as glass, ceramic, or sturdy plastic containers. Even freezer bags are a good option. In selecting the container it's important to assess them for their airtightness.

How to tell if nuts have gone bad? ›

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.

How to organize nuts in a pantry? ›

You'll notice a theme with how to store nuts and seeds: the colder, the better. If you plan to use them in the immediate future, it's fine to store the airtight containers in a cool, dark spot in your pantry. To keep them fresh for much longer, store your nuts and seeds in the refrigerator or the freezer.

What nuts are prone to mold? ›

All nuts (except for coconuts) are suspect for mold: Brazil nuts, pistachios, pine nuts, walnuts, pecans, hazelnuts, and cashews are some of the worst offenders, even though they're some of the healthiest fats for weight loss. Uh, so what's the risk from Nut Milk?

Do nuts last longer in the freezer? ›

If stored in the refrigerator, however, these healthy fat sources can last up to six months. But the freezer is really where it's at when it comes to storing nuts, as they can easily last up to a year in there—with some experts saying up to two years! Plus, you won't even notice that your nuts have been frozen.

Do unopened bags of nuts go bad? ›

According to Lindsay, you can keep an unopened bag of shelled or in-shell nuts in the fridge or freezer for two years (!). Even if the bag's been opened, shelled nuts should last an entire year, and in-shell nuts will last about a year and a half.

Do you have to refrigerate nuts and more? ›

The shelf life is 12-14 months sealed. Once opened, we recommend using the butters within 3 months. Do I need to refrigerate your products? While it's not necessary to refrigerate our products, we recommend doing so to keep the naturally occurring oils from separating.

How do you know if nuts have gone bad? ›

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.

Should walnuts be refrigerated? ›

Answer. Most shoppers are not aware that it is important to store walnuts in the refrigerator or freezer to maintain freshness, instead of the pantry. Proper storage is important to protect the essential plant-based omega-3 alpha-linolenic acid (ALA) in walnuts.

Do pecans go bad in the freezer? ›

Unshelled pecans can last between two and four years in the freezer and taste great when you take them out. Roasted, salted or candied pecans also do well in the freezer, thanks to the extra layer of insulation.

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