Where is the best place to store walnuts to keep them fresh? (2024)

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. In fact, walnuts are the only nut that provides an excellent source of this essential fatty acid (2.5 g/oz.), which has been associated with benefits for heart health, brain health and inflammation.1-4

We suggest storing walnuts in the cheese drawer, a reminder to grab a handful of walnuts as a simple, satisfying snack.

Follow these tips to maintain the high quality, freshness, flavor and nutritional value of California walnuts:

  • Store in air-tight packaging.
  • Store away from foods with strong odors, like cabbage and onions.
  • For short-term storage, keep them in your refrigerator. If you’ll be storing them for a month or longer, store them in your freezer.
  • Prep as needed – shell, chop or grind walnuts right before using them. This will help maintain great flavor and optimal freshness.

For more storage and usage tips, visit walnuts.org.

  1. S. Department of Agriculture, Agricultural Research Service. FoodData Central, 2019. Fdc.nal.usda.gov.
  2. Sala-Vila A, Fleming J, Kris-Etherton P, Ros E. Impact of alpha-linolenic acid, the vegetable omega-3 fatty acid, on cardiovascular disease and cognition. Advances in Nutrition. Doi.org/10.1093/advances/nmac016.
  3. Guasch-Ferré M, Li J, Hu FB, et al. Effects of walnut consumption on blood lipids and other cardiovascular risk factors: an updated meta-analysis and systematic review of controlled trials. Am J Clin Nutr. 2018;108(1):174-187. doi: 10.1093/ajcn/nqy091.
  4. Cofán M, Rajaram S, Sala-Vila A, et al. Effects of 2-Year Walnut-Supplemented Diet on Inflammatory Biomarkers. J Am Coll Cardiol. 2020 Nov, 76 (19) 2282–2284.
Where is the best place to store walnuts to keep them fresh? (2024)

FAQs

Where is the best place to store walnuts to keep them fresh? ›

Store in air-tight packaging. Store away from foods with strong odors, like cabbage and onions. For short-term storage, keep them in your refrigerator. If you'll be storing them for a month or longer, store them in your freezer.

Should walnuts be kept in the refrigerator? ›

How to Store Walnuts. Seal loose or bagged walnuts in a large GladWare® food protection container or Glad® Zipper Bag. Nuts should be placed in a dry, dark place, preferably the refrigerator.

How do you increase the shelf life of walnuts? ›

The best ways to store walnuts for freshness
  1. 1) Choosing the Right Storage Container.
  2. 2) Keeping It Cool.
  3. 3) Dry and Dark Environment.
  4. 4) Freezing for Longevity.
  5. 5) Avoiding Cross-Contamination.
  6. 6) Regular Inspection and Rotation.

How to prevent walnuts from going rancid? ›

Reducing oxygen exposure is your number one priority. Glass jars that have been vacuum sealed with a food evacuator are the gold standard, says Schaich. The second best: Put your nuts in a resealable plastic bag and press out as much air as possible before sealing, then store the bag in a glass container.

Do walnuts go bad 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.

How to keep walnuts fresh longer? ›

Answer
  1. Store in air-tight packaging.
  2. Store away from foods with strong odors, like cabbage and onions.
  3. For short-term storage, keep them in your refrigerator. If you'll be storing them for a month or longer, store them in your freezer.
  4. Prep as needed – shell, chop or grind walnuts right before using them.

How do you store walnuts in the summer? ›

HOW TO STORE WALNUTS. If you buy walnuts in sealed packaging, you can store the walnuts in their original packaging in the refrigerator or freezer. Once you open the bag, transfer the walnuts to an airtight container to maintain freshness and then place them back in the refrigerator or freezer.

How to 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 long do walnuts last in a Mason jar? ›

Another option is to use containers with airtight seals, such as glass jars or plastic ones, to ensure the nuts maintain the proper moisture level. If you keep nuts at room temperature, ensure they are away from direct heat; this will maintain their freshness for up to 3 months, considered short-term storage.

How to freshen up old walnuts? ›

Spread the stale snacks out on a cookie sheet and place in a 350o F oven. Let them bake for about 10 minutes and then remove from the oven and let cool completely. Once cooled the snacks should be crispy and refreshed. You can use this method with fresh nuts like almonds, peanuts, walnuts, etc.

Do walnuts in a bag go bad? ›

Exposure to warm temperatures for long periods of time will cause the fat in walnuts to change and turn rancid. You can tell walnuts are turning old if they are rubbery or shriveled. They have turned rancid if they have a strange odor similar to paint thinner. Throw away rancid walnuts!

What happens if I eat rancid walnuts? ›

Is it dangerous? Eating rancid food won't make you sick, but the new molecules that form as oxidation occurs may lead to digestive issues. Rancid foods are also less nutritious because oxidation destroys the good fats and some of the vitamin content.

How many walnuts to eat per day? ›

Regularly eating walnuts has been consistently shown to decrease cholesterol levels . In a small 2017 study in healthy adults, eating 1.5 oz (43 g) of walnuts daily for 8 weeks produced a 5% decrease in total cholesterol, LDL cholesterol, and triglycerides compared to not eating walnuts.

How do I know if my walnuts are bad? ›

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.

Where is the best place to store walnuts? ›

The refrigerator is a great choice as walnuts will remain fresh for up to three months. You can also freeze walnuts for up to one year. Walnuts will absorb odors so it is best to place them at distance from foods with strong odors, such as onions. Airtight containers provide the best protection to maintain freshness.

How long do walnuts last at room temperature? ›

If you keep nuts at room temperature, ensure they are away from direct heat; this will maintain their freshness for up to 3 months, considered short-term storage. However, you can keep them longer, up to 6 months.

Should nuts be refrigerated after opening? ›

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.

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