Are bitter walnuts safe to eat?

In this brief guide, we are going to answer the question, “Are bitter walnuts safe to eat?”. We will discuss what makes walnuts bitter. We will also discuss in depth the benefits of eating walnuts as well as the safest ways to eat walnuts. 

Are bitter walnuts safe to eat?

No bitter walnuts are generally not safe to eat. This indicates that oxidation has begun, with potentially hazardous consequences. Freshly skinned walnuts are wonderful raw or cooked, and they may be used in a variety of cuisines. They can be offered as an appetizer when roasted or toasted.

What makes walnuts bitter?

Walnuts are bitter since the brownish skins that surround the nut contain tannins, antioxidants that are bitter by nature. There are more tannins in some walnuts than others, which isn’t always a bad thing. To reduce the bitterness, the peels can be removed.

Oxidation is another factor that contributes to the bitterness of walnuts. Oxidation can be described as any activity in which oxygen reacts with a specific substance or chemical.  As you may know, oxidation is a destructive process. 

So, if your walnuts start to oxidize, it’s probably a good idea to abstain from eating them. In the long run, they could have major negative consequences. 

Remember that walnuts can absorb odors from warehousing, so be sure to keep them in an airtight container to avoid picking up another flavor.

What are the benefits of eating walnuts?

Walnuts are the most nutritionally dense nuts. Each day, consuming only one ounce  (about 7 shelled walnuts or fourteen halves) can improve your overall health. Walnuts are high in energy and include various minerals, antioxidants, and vitamins that are essential for good health.

Walnut nutrients help your cardiovascular system respond to different stimuli in a healthy manner by having a consistent quantity of antioxidant and anti-nutrient content in your system, a regular blood composition, the proper balance in inflammation-regulating substances, and the proper composition and versatility in the walls of the arteries.

Walnuts include phytonutrients that aren’t seen in other regularly consumed foods. The effects of phytonutrients have been studied recently in phytonutrient research.

Walnuts may defend you from type 2 diabetes, metabolic syndrome,  sleeplessness, obesity, lower bone density, and cardiovascular disease, according to a recent phytonutrient study on the effects of these rare, strong antioxidants and anti-inflammatory characteristics.

Walnuts also cut LDL and raise HDL blood levels, which improves cholesterol levels and creates a better blood lipid profile. Walnuts are high in monounsaturated fats such as oleic acid, as well as omega-3 fatty acids.

The antioxidant characteristics of walnuts, which are high in phytochemicals including melatonin, polyphenolic compounds, ellagic acid, and carotenoids, assist your body in battling inflammation, neurodegenerative conditions, premature aging, and malignancies. 

Walnuts are mega of free radicals across your body due to their high concentration of polyphenolic antioxidants.

Riboflavin, pantothenic acid, thiamin, niacin folates, and Vitamin B-6 are all found in walnuts. Water-soluble B-complex vitamins aid in the maintenance of a healthy metabolism, the maintenance of neurotransmitters in the brain, the maintenance of digestive function by suitably triggering the production of gastric acid, and the maintenance of healthy hemoglobin levels. 

Copper, potassium, iron, manganese,  magnesium, selenium, and zinc, among other minerals found in walnuts, work as cofactors with different enzymes to control growth and digestion.

How to safely prepare walnuts to eat?

Here’s how you can blanch and roast walnuts correctly.

  • Bring a pot of water to boil to blanch walnuts. When the water is boiling, add the walnuts that have been broken. Remove the walnuts from the water after about a minute of simmering. Allow them to dry on the top of the oven to speed up the process, or simply heat until they are completely dry.
  • If the walnuts are entirely dry, the skins should peel off easily now. The skins will attach to your fingers if they are damp. 
  • Place your split walnuts on a prepared pan lined with parchment paper. Ensure that all of the walnuts are arranged in a thin layer. Place the tray in the oven and reduce the heat to low. Allow walnuts to sit for about 5 minutes before turning them over and allowing them to rest for yet another 3 minutes. 
  • Allow the walnuts to cool to room temperature before touching them after they have finished roasting. After that, take a fresh paper towel and begin rubbing the nuts together in it. Because the oils on the walnuts separate the skin from the nut, the skins should be easily removed.

Other FAQs about Walnuts that you may be interested in.

Is it safe to eat expired walnuts?

How to keep walnuts fresh

Can you eat black walnuts?

Can you freeze walnuts?


In this brief guide, we answered the question, “Are bitter walnuts safe to eat?”. We discussed what makes walnuts bitter. We also discussed in depth the benefits of eating walnuts as well as the safest ways to eat walnuts. 

If you have any questions or comments, please let us know.


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