Can Pistachios Go Bad? – How Long Do Pistachios Last in Fridge? – Pistachios Storage, Shelf Life

Can Pistachios Go Bad?: Cleaning is the time when you find various food products in your pantry that you didn’t know were there. Like an old pistachios pack, sitting there for who knows how much longer. You take that pack and check the best by date, and it is reaching that date. Can Pistachios Go Bad?

Pistachios are nuts that have various health benefits like high protein content, smart snack, and good for the heart. So, no one wants to waste these expensive pistachios nuts if they are good. Here we are giving the ways to tell if pistachios are bad, how long pistachios last once opened and storage conditions.

can pistachios go bad

Do Pistachios Go Bad?

Yes, pistachios sooner or later go bad when stored for a longer period in humid or warm conditions. You can whether nuts are rancid or not by checking the steps how to know if pistachios are bad.

The simple technique to confirm that pistachios are rancid is they start to taste bitter or sharp, and give off a crayon or paint smell when they are bad. Bad pistachios are unsafe to eat. Go through the following sections to know more about pistachios’ signs of spoilage.

Can Pistachios Go Bad

How to Tell if Pistachios Are Bad?

These are the techniques to tell if pistachios are rancid.

  • If your opened pistachios package sits in the pantry for a long time and has some insect issues, then it has gone bad. If you find eggs, dead or alive insects in the nuts, they are rancid.
  • Mold growth on pistachios is another sign of bad nuts.
  • Observe the smell and taste of the nuts, if you find a bad smell and taste, then discard them.
  • The good news is that pistachios don’t go bad that easily because it has a relatively low amount of polyunsaturated fats.

Using Stale Pistachios

If your pistachios have lost their taste and freshness, not all is lost, then you can use them. Toast the pistachios until they get fragrant and use them whenever you want. Add the toasted or stale pistachios to ice cream or desserts and enjoy the flavor. Or use them in baking goods like cupcakes, yeast bread, or muffins.

More Related Articles

Can Pistachios Go Bad

Can Pistachios Go Bad 1


Nutritional Information (Approx Value)

Nutrients Per 100 g Per Serving 28 g %RDA (Per Serving)
Energy (kcal) 570.2 159.65 7.98%
Protein (g) 19.52 5.46
Carbohydrates (g) 41.67 11.66
Sugar (g) 0 0
Total Fat (g) 36.16 10.12 15.10%
Saturated Fatty Acid (g) 4.18 1.17 5.31%
Mono Unsaturated Fatty Acid (g) 19.23 5.38
Poly Unsaturated Fatty Acid (g) 12.75 3.57
Trans Fat (g) 0 0%
Cholesterol (mg) 0 0 0%
Sodium (mg) 50 14 0.07%

An average adult requires 2,000 kcal energy per day, However, calorie needs may vary.

How Long Do Pistachios Last?

Pistachios maintain their quality for about 6 months in the pantry at room temperature or about 12 months in the fridge. Unshelled pistachios last slightly longer than shelled ones. And even the proper storage is useful to extend the nut’s shelf life.

Of course, if you want pistachios to be stored for a longer period, you have to freeze them. Pistachios stored in a refrigerator or cold environment can keep quality for 1 year.

Shelled Vs In-Shell Pistachios

Unshelled pistachios maintain their quality more than shelled ones. Because the shell protects the nutmeat from some of the air and humidity. But most pistachios are split open, and that protection is limited.

Nuts like walnuts and hazelnut’s shelf life are different for shelled and unshelled. If you are more likely to eat those pistachios if you buy them shelled, sacrificing a couple of weeks’ shelf life.

Expiration Date

For every store-bought pistachios pack, there is the best-by date on the label. Remember this date is the estimation of the nut going bad not the expiration date. Eating pistachios after the use-by date is safe.
But before using pistachios after the best-by date, you are recommended to check the signs of spoilage.

Pistachios variety Pantry Refrigerator Freezer
Shelled 5 months 1 year 18 months
Unshelled 6 months 1 year 2 years

How Long Do Pistachios Last Unopened

How To Store Pistachios?

Pistachios are expensive. So everyone has to store them safely to use for a too long period. Once the pistachios package is opened, it should always be transferred into an airtight container or plastic bag or ziplock bag or freezer bag. The container will prevent the nuts from moisture, air and going stale. Once the nuts are taken, they should always be sealed tightly.

Room Temperature

Place pistachios in an airtight glass or plastic container and leave them in a cool and dark environment like a kitchen cupboard or pantry. Also, make sure that nuts are placed away from heat sources or sunlight.
If you want to store pistachios for a shorter period, then you can use ventilated bag.


Storing pistachios in the fridge is another good option so that the nuts retain quality for 1 year. Before placing them in the refrigerator, put the shelled or unshelled pistachios into a resealable, freezer bag or storage container. so that it will not take odor from other food products in the fridge.

Can You Freeze Pistachios?

Yes, freezing is fine for pistachios. It helps to increase the nut’s shelf life up to 1 year. When you are checking for how to freeze pistachios, read the following sections.

Transfer the opened pack of pistachios into a freezer or ziplock bag. Squeeze out the air or oxygen. Seal the bag carefully and freeze it. The process of freezing nuts is a 5-minute work but it will really helpful to store them for a longer duration. Pistachios don’t stick tight when frozen, so you not need to worry about the defrosting process. Take the freezer bag out and leave it at the kitchen counter for 30 minutes to use them.

Surprising Facts About Pistachios

The surprising facts about pistachios are along the lines:

  • Pistachios nuts are nutrient dense.
  • Their shells may help you eat less.
  • These nuts have as much protein as an egg.
  • Nuts are grown in the U.S.
  • Pistachios nuts are great for baking and cooking.
  • They will help you snack smarter.
  • They are heart-healthy.

FAQs on Can Pistachios Go Bad

1. What happens if you eat expired pistachios?

Eating rancid pistachios can make you nauseous and even give you diarrhoea.

2. What to do with stale pistachios?

You can repair the stale pistachios by roasting them in a dry pan or oven. And add them into ice creams, desserts, baked goods, and so on.

3. How long do pistachios last in the fridge?

Either shelled or unshelled pistachios will last for up to 1 year in the fridge.

4. Are soft pistachios bad?

No, soft pistachios are not bad. They might absorb moisture from the air.

Key Takeaways

We wish the information prevailing here about Can Pistachios Go Bad is genuine and true as far as our knowledge is concerned. At the proper storage system, the nuts can stay good for a longer time. If you have any queries left unanswered feel free to reach us via the comment section and we will get back to you as soon as possible. Bookmark our site to get the latest updates on the nuts food articles.

Leave a Comment