How Long Do Walnuts Last in the Shell

How Long Do Walnuts Last in the Shell

Walnuts are one of the most nutritious and delicious foods you can eat. We think they taste best when they’re fresh. Have you ever wondered how long do walnuts last in the shell? Walnuts are a great snack or product that should be stored properly. 

Walnuts stay fresh and flavorful for up to a year after they are purchased. As long as they are stored in their shells, they will remain fresh. They can be placed in the freezer and kept there until needed; once they’re frozen, they’ll have no trouble staying fresh.

Walnuts are among the easiest nuts to shell, but they are also one of the most perishable. The shells must be cracked open before they can be eaten or used in recipes. They are a nutritious addition to your diet and can be stored in the shell in an airtight container, with no special packaging required.

Kindly continue reading to learn how long walnuts will last in the shell before they start to go bad and how to extend the shelf life of your nuts by storing them properly.

How Long Are Walnuts Good for

How Long Are Walnuts Good for

A simple rule for determining the shelf life of nuts and seeds is to use the date you opened the container. If you opened the container within a year, it should still be good for another year. If you opened it over a year ago, it might not be safe to eat anymore. And if your walnuts aren’t showing any mold or decay, they’re probably still good. And if you see notice signs of rot or discoloration (they may look more orange than usual), throw them out immediately.

Meanwhile, to ensure your walnuts stay fresh and tasty as long as possible, ensure they’re stored in an airtight container. If you don’t have one, try using an empty peanut butter jar or Tupperware container.

And toss them if your walnuts have been sitting around for a while and look a bit browned on top! They may still be edible—but the taste will not be as good anymore.

However, If you’re worried about spoilage, you can keep them in the fridge or even a cool basement where it’s cooler than in the kitchen (but not freezing). The container you are using is airtight; oxygen will get into your walnuts and turn them brown.

How Long Do Fresh Walnuts in the Shell Last?

Fresh walnuts in the shell last a long time—they can last up to six months in your pantry. The key is to store them in an airtight container, keeping them fresher for longer.

And if you want to use them immediately, wrap them in plastic and put them in the fridge.

If you want to store them, place them in an airtight container and keep them on your pantry shelf.

 However, they will lose some moisture over time. And if you are not sure how long you can keep your walnuts, it is best to refrigerate them after opening them.

How Long Do Black Walnuts Last in the Shell?

Black walnuts are a delicious treat that can be enjoyed for years. They can be stored in the shell, or you can remove the nuts from the shell and enjoy them as fresh as possible.

If you’re planning to store your black walnuts, it’s best to use them within about six months after purchase. If you purchase your nuts at a local market, they will likely be fresher than if you buy them online or from a specialty store.

To keep black walnuts fresh for longer, keep them in an airtight container with an inch of water in the bottom. The water will help prevent them from drying out and losing flavor over time.

And If you want to keep black walnuts beyond 6 months, you can store your black walnuts in the fridge or freezer. In this case, it’s best to let them thaw before eating them, so they’re soft enough to chew without breaking your teeth.

How Long Do Walnuts Last in the Fridge?

Here are a few things about how long walnuts last in the fridge.

First, if you’re going to keep them for longer than a week, it’s best to use raw walnuts—they tend to stay fresher and more flavorful for longer. It doesn’t make much difference if you plan to keep your walnuts for just a few days.

Second, walnuts can keep their freshness longer if stored in an airtight container with plenty of room for air circulation around them—a bowl with holes punched in the top works well. They should also be stored in an area with low humidity and high temperatures—in other words: don’t put them on the windowsill!

Finally, keep your walnuts away from direct sunlight when storing them in the fridge or freezer! If exposed to too much sunlight (or any other heat), their natural oils may become damaged over time and spoil their taste.

So walnuts do have a shelf life. They last for six months out of the fridge, but they will start to lose their flavor after that period has passed.

Although walnuts can be kept in the fridge for up to six months, it’s best to eat them within three months of purchasing them so that they don’t go bad or lose their texture or flavor. If you want to use them before then, keep them in an airtight container at room temperature instead of putting them in the fridge—the humidity will keep them fresher longer.

How Long Do Walnuts Last at Room Temperature?

Room temperature storage is another great way to preserve your walnuts for as long as possible. Walnuts will stay fresh in an airtight container or sealed bag for up to three months when kept at room temperature. 

And it means you can set them out on your countertop and eat them whenever you want—without worrying about how long they’ve been sitting around.

Here’s a quick and easy way to determine how long your walnuts will last at room temperature:

First, place your walnuts on a plate or in a bowl.

Cover them with plastic wrap (or put them in a Ziploc bag) and seal them tightly.

Let the nuts sit for at least four days. You can also store them in the refrigerator if you’re not planning on eating them for that long. The longer you leave them out, the less fresh they will taste when you eat them.

Also, Live somewhere warm where the temperature never drops below freezing or so low that most fruits and vegetables go bad during wintertime (like Florida or California). 

It won’t be an issue for you, but if not, I strongly encourage you to invest in some proper storage equipment and containers.

Do Unshelled Walnuts Go Bad?

Do Unshelled Walnuts Go Bad

Unshelled walnuts do go bad, and the reasons for this are as follows:

  • Most people don’t like to shell their walnuts, exposing them to oxygen and other elements that can cause rancidity.
  • Unshelled walnuts have a much higher oil content than shelled ones, increasing their chances of rancid.

Unshelled walnuts go bad because they have a higher moisture content than shelled walnuts. That’s why they’re cheaper but don’t last as long. If you buy unshelled walnuts, check them every few days to ensure they’re still crunchy and fresh.

And if you’re going to leave unshelled walnuts out for more than a few days, you’ll want to ensure they’re in an airtight container. If the container is not airtight, bacteria can grow on the walnuts and cause them to spoil.

How to Know If Walnuts Are Bad?

 Walnuts are a delicious snack but can also be a source of frustration. When you’re looking for ways to enjoy them, it’s important to know how to tell if walnuts are bad.

Bad Walnuts: Walnuts that are dry and brown. If your walnut is brown, the nut has been exposed to heat too long or too often and has dried out. You should throw away any walnut with brown spots on it and try another brand!

So how do you know if walnuts are bad? It’s easy! Just look at the color of your walnut! If it’s brown and cracked, you don’t want to eat it anymore if your walnut has green and soft shells or no cracks in the shell.

1. The smell: Walnuts should smell sweet, like an orchard. If they don’t, they may have been damaged during shipping or storage and will most likely be rancid.

2. The color: Walnuts should be bright green and shiny, with no yellowing or brown spots visible on the skin when held up against a light source (like sunlight). If any part of your walnut looks like this—or looks off in general—it might not be fresh and won’t be safe for consumption.

How to Tell If Walnuts Are Good

Walnuts are a great snack, but not all walnuts are created equal. Here’s how to tell if your walnut is good and whether it’s worth eating or not.

1. The shell should be intact: If your walnut shell has been broken, it isn’t safe to eat (and you should throw it out).

2. The shell should be brown: If your walnut shell is greenish or white, you can’t know if it’s safe to eat—it means the nut has probably been exposed to light, which can cause spoilage.

3. The nut itself should feel firm: A ripe walnut will have a firm texture and no moisture inside or around its outer shell; if this isn’t the case, don’t eat it.

4. Smell Test: Like apples, you can also smell whether or not your walnuts are good by putting them in your nose! If you smell something off about them (like mold), don’t eat them.

5. Look at the color of each walnut in your container—they should be bright green and not brown or black. If one or two of them has been bruised during shipping or storage (which happens sometimes), it doesn’t necessarily mean those particular nuts are bad; keep an eye out for any signs of bruises on other nuts before buying.

How to Store Unshelled Walnuts

Unshelled walnuts are a great way to add flavor and texture to your food, but they can also be tricky to store. Luckily, a few tricks will help you keep them fresh for longer than a day.

First, make sure you’re storing the walnuts in an airtight container. If they aren’t sealed properly, they could mold or grow moldy over time.

Next, put the container in a cool place—not too cold, but not so warm that it has room to grow bacteria. It will help keep things dry and prevent unwanted bugs from growing inside them.

So unshelled walnuts can be stored in the refrigerator for up to three months. You can store unshelled walnuts in a plastic bag or tin, but if you use plastic, rinse them thoroughly with water before putting them in the container because some types of plastic are not porous enough to allow air to enter them, and they will get moldy.

Here are extra tips for keeping your unshelled walnuts fresh:

  • Store in an airtight container that is free of moisture and insects.
  • Shelf them at room temperature, not in the refrigerator.
  • If you want to keep them longer than one week, store them in the freezer.

How to Store Walnuts in Freezer

Walnuts are good if you add them to salad or sandwiches, but they can also be used in other recipes. Here’s how to store them in the freezer:

1. Put walnuts on a plate or dish, and cover them with plastic wrap. If you’re using a dish, ensure it’s airtight so that air doesn’t escape as your walnuts are frozen!

2. Put the plate or dish in the freezer for at least 24 hours—or up to 10 days—to freeze them completely.

3. Place the walnuts in an airtight container or bag and store them in the freezer for up to 3 months.

And if you don’t want to wait long for your nuts to freeze, place the pan in an airtight plastic bag and remove as much air as possible before storing.

When ready to use them, remove the walnuts from the freezer and let them sit on your counter at room temperature until they thaw.

What to Do with Expired Walnuts

If you find yourself with expired walnuts, there are a few things you can do with them. First, consider your options:

1. You could use them in a recipe that is supposed to be fresh. If that’s the case, look for a recipe on the internet or at your local store that calls for walnuts that are still fresh.

2. You could mix some nuts into another snack food and eat them as is. For example, if you were making granola bars, you could mix in some walnuts if they don’t go bad before the recipe calls for them.

3. Roast the nuts. If you buy fresh walnuts, roast them at 350 degrees for 15 minutes, then cool them before eating or using them as a topping on foods like salads or yogurt. If you buy dried ones, add 1/4 cup water for every cup of dried nuts (so if your package contains 1 cup nuts, add 3/4 cup water). 

Then roast at 350 degrees for 20 minutes and let cool completely before serving! They taste great in salads, on top of granola bars or cereal bars, or on yogurt parfaits.

5. Crunchy snacks. Mix 1 tablespoon vegetable oil with 2 tablespoons water in a medium bowl until combined well enough so that it does not break apart when stirred with

6. You could send them to someone who will appreciate them more than you do.

Can I Eat Expired Walnuts?

Can I Eat Expired Walnuts?

Walnuts are raw, natural food that must be stored properly for a long time. If you do not store them properly and they become moldy, they will spoil and develop a bitter taste.

So you cant eat expired walnuts.

If you find an unopened package of walnuts in your pantry that has been there for more than 6 months, you should throw them out. They have probably gone bad and will no longer be suitable for consumption.

You can try eating the outer shell of the walnut, but this is not recommended as it may contain bacteria or other microbes that could make you sick.

Generally, If your walnuts aren’t quite as fresh as you’d like, or if you’re worried about any other signs of spoilage (like mold), throw them out and get some new ones.

Frequently Asked Question

How Long Do Walnuts Last After Opening?

 Walnuts typically last for about 6 months after being opened. When you purchase walnuts, keep them in their original packaging until you’re ready to use them. Once unwrapped, store your walnuts in an airtight container away from direct sunlight.


Walnuts are a great snack before or after work. They’re delicious and crunchy. But how long do walnuts last in the shell? Walnuts last longer in the shell than they do after they’ve been shelled. It is because walnuts have a protective barrier around them as soon as they are picked from the tree.

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