Can you freeze acorns?

In this brief guide, we’ll address the query: “Can you freeze acorns?” Also, we’ll explore when it is convenient to freeze acorns, how acorns can be preserved, what dishes can be made with acorns, what the nutritional content of acorns is, and whether they are healthy to eat. 

Can you freeze acorns

Yes, it is possible to freeze acorns when processed, though it must be noted that acorns that are intended to be used as germplasm (seeds) will perish if frozen, as subzero temperatures are lethal to the embryos within. 

Acorns that are gathered and stored as food can be frozen under certain conditions, though they are noxious to humans if they’re not adequately processed. 

Despite the tannins present in acorns making them toxic to humans, horses, and dogs, they are valuable sources of sustenance for other animals such as squirrels, deer, squirrels, and other forest wildlife. 

Below, we’ll describe what scenarios may call for acorns to be stored at subzero temperatures. 

When is it convenient to freeze acorns

It’s convenient to freeze acorns that have been processed into foods such as pastes and flours, though whole acorns that have been leached can also be stored in the freezer.

These products can be purchased from stores or made at home, by following the guidelines for leaching the tannins out of the acorns. 

Leaching is a simple process that involves leaving the acorns to soak in a large kettle and boiling them for about 15 minutes. This assures that the tannins will seep out from the dry fruits and the water will change color, turning to a shade of brown. The water should be decanted and the pot should be filled with fresh water. 

The process should be repeated until the water boils clear, which indicates the absence of tannins. 

Once leached, the acorns should be fully dried and ground into flour or made into a paste when they have little moisture left.  

Both of these products can be stored in the freezer to preserve their shelf life, as the remaining fatty acids will break down more rapidly at room temperature, causing the acorn meals to go rancid, and even facilitate the formation of free radicals. 

Freezing can be accomplished by packaging both products in quality freezer bags and tightly sealing them after pushing out all the air, to prevent desiccation and freezer burns. 

Frozen acorn paste and flour can last for up to one year, though are best consumed before said time elapses. 

Whole leached acorns that are frozen can be stored for many years, and both can be defrosted by being left overnight in the fridge. 

How can acorns be preserved for consumption?

Leached acorns can be stored at room temperature if they remain intact, whereas those that have been milled and made into flour, acorn meal, and acorn paste can be stored either in refrigeration or in the freezer. 

What dishes can be made with acorns?

Acorns can be processed into flour, grits, paste, or used whole, and they can be used to make muffins, cakes, soup, flatbreads, shortbreads, cookies, croquettes, ice cream, and many other dishes, both sweet and savory. 

There are many available recipes that readers can consult if they happen upon processed acorns, or decide to make use of acorns they’ve foraged and leached. 

What is the nutritional content of acorns

A 28-gram serving of dried acorns will provide: 

  • 144 calories
  • 2 grams of protein
  • 9 grams of fat
  • 15 grams of carbohydrates
  • 1.4 milligrams of sodium
  • 2 milligrams of potassium 

Additionally, the same serving will provide iron, folate, vitamin B6, manganese, and vitamins A and E.  Other metabolites found in acorns include quercetin, gallic acid and resveratrol, which are antioxidants. 

Are acorns healthy to eat? 

Yes, acorns that have been adequately leached and processed are healthy to eat. This is important, as acorns that don’t have their tannin concentrations lowered may interfere with the body’s ability to absorb nutrients from other foods and even have a detrimental effect. 

Acorns are good sources of fiber, which stimulates the microbes present in the digestive tract and promotes digestive health, the antioxidants present in acorns can held fend of damage caused by free radicals, and they may be a consumer-friendly food option–if foraged and processed adequately

On the other hand, those with tree nut allergies should not consume acorns, at the risk of triggering a severe reaction, and acorns should only be eaten when they’ve been properly leached, amateur foragers should take this last bit into account to avoid poisoning from consuming tannins. 

Generally, acorns can be considered healthy as they are low in calories, sugars, and fat, and they contain health-promoting metabolites.  


In this brief guide, we’ve addressed the query: “Can you freeze acorns?” Also, we’ve explored when it is convenient to freeze acorns, how acorns can be preserved, what dishes can be made with acorns, what the nutritional content of acorns is, and whether they are healthy to eat. 


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Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.