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Raw Walnuts — In Shell - 1 lb (16 oz)

Kosher Certified
Raw Unsalted
No PPO Fumigation
California-Grown
Non-GMO
⚡
2.5g Omega-3 ALA Per Oz - The Only Tree Nut With Meaningful Plant Omega-3.
Whole California-grown English walnuts, still in the shell, raw and unsalted. Crack them fresh and get the full polyphenol, ALA, and antioxidant profile that roasted pre-shelled walnuts cannot match. Packed fresh in Monroe, NY. Kosher certified.
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$13.97
$13.97 List Price: 
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🌾 Farmers Seal of Freshness
  • Whole English walnuts still in the natural shell, grown in California
  • Raw only no roasting, no salt, no added oil, no PPO fumigation
  • Packed fresh in a resealable food-safe stand-up bag at our Monroe, New York facility
  • 12 to 18 months room-temperature shelf life in the shell
  • 100% satisfaction guarantee
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Walnuts in the shell are the original version. Before pre-shelled walnuts became the grocery store default, every walnut you bought came with its shell on. You cracked them as you ate them, which kept the nuts fresher (shells are nature's packaging), made snacking slower and more deliberate, and filled a bowl on the coffee table for family or guests to pick at over weeks.

Our Raw Walnuts in Shell bring that back. Whole English walnuts still in their natural shells, grown primarily in California with some Oregon orchards, sourced direct and packed fresh in resealable bags at our Monroe, NY facility. Raw (not roasted), unsalted, with nothing added. kosher certified.

What You're Buying

  • Form: whole English walnuts still in the shell, unshelled

  • Processing: raw only, no roasting, no salt, no oil, no treatment

  • Origin: California, with some Oregon-grown varieties

  • Packaging: resealable food-safe stand-up bag

  • Shelf life: 12 to 18 months in the shell (much longer than shelled walnuts)

  • Kosher: certified

  • Nutcracker not included

  • Allergen note: tree nuts, processed on shared equipment with other tree nuts and peanuts

Why In-Shell Instead of Pre-Shelled

Three reasons people still buy walnuts in the shell.

First, freshness lasts longer. Shelled walnuts have exposed oil surfaces that oxidize. In-shell walnuts stay fresh for 12 to 18 months in a pantry, versus 3 to 6 months for shelled. If you buy in bulk and want shelf life, in-shell wins.

Second, the shell itself is part of the experience. Cracking walnuts is a slower snacking ritual that suits Thanksgiving, Christmas, and family gatherings where a bowl of nuts on the table gets picked at for hours. Pre-shelled walnuts disappear in 30 seconds. In-shell walnuts last a whole evening.

Third, the flavor is better. Walnuts lose volatile flavor compounds once cracked. Crack them right before eating and the flavor is richer and less bitter than any pre-shelled walnut.

How People Use Them

Holiday tables get these the most. A bowl of unshelled walnuts plus a nutcracker on the Thanksgiving or Christmas table keeps guests occupied between courses, functions as decor, and slows down dessert pacing in a way that pre-shelled nuts can't replicate.

Snacking with a purpose. Cracking your own nuts adds friction to snacking, which naturally paces intake. Good for anyone trying to eat mindfully without restricting outright.

Baking from scratch. Cracking walnuts right before baking into banana bread, brownies, or cookies gives you fresher flavor than pre-shelled nuts that have been sitting on a shelf. Worth the extra step for baked goods where walnut flavor is central.

Children learning kitchen skills. A nutcracker and a pile of walnuts is a low-risk activity that kids can do under supervision, and it teaches patience and fine motor coordination.

Gift giving. A bag of fresh in-shell walnuts paired with a quality nutcracker is a thoughtful gift for cooks, bakers, or anyone whose home entertains around food.

Winter pantry stocking. In-shell walnuts keep for over a year, so bulk purchases in fall cover you through winter cooking and holiday baking without worry about spoilage.

Nutrition per Ounce of Shelled Walnut (About 7 Halves)

  • 185 calories

  • 4g protein

  • 18g fat (mostly polyunsaturated, including plant omega-3 ALA)

  • 2g fiber

  • 2g net carbs

  • Walnuts are one of the few plant sources of omega-3 fatty acids

  • Solid copper, manganese, and magnesium

About 40 to 45% of the weight of an in-shell walnut is the shell itself, so a 1 lb bag of in-shell walnuts yields roughly 9 oz of edible nut meat after cracking. Plan bulk purchases accordingly.

How Freshness Holds Up

Seal the bag after opening and store in a cool, dry place. In-shell walnuts last 12 to 18 months at room temperature, up to 2 years refrigerated, and up to 3 years frozen. The shell does most of the preservation work on its own.

Once cracked, treat the loose nut meat like regular shelled walnuts: 3 to 6 months in a sealed container, up to a year refrigerated. Only crack what you plan to eat or cook with in the short term.

 

Health Benefits of Raw In-Shell Walnuts

Omega-3 ALA: The Only Tree Nut With a Meaningful Plant Omega-3 Source ▾

  • Walnuts contain approximately 2.5 grams of alpha-linolenic acid (ALA) per ounce, making them the richest whole-food plant source of omega-3 fatty acid among all common tree nuts. No other tree nut, including almonds, cashews, pistachios, or pecans, provides ALA at a nutritionally meaningful level. This is one of the clearest nutritional differentiators between walnuts and every other nut in the category. ALA is classified as an essential fatty acid because the human body cannot synthesize it and must obtain it entirely through diet.
  • The body converts a small percentage of dietary ALA into the longer-chain omega-3 fatty acids EPA and DHA, though conversion efficiency is low (typically 5 to 10% for EPA, less than 1% for DHA). Walnuts are not a direct substitute for marine omega-3 sources for EPA and DHA specifically. However, ALA itself has independent anti-inflammatory properties, and population studies consistently show that people with higher ALA intake have better cardiovascular markers than those with lower intake, independent of EPA and DHA status. The raw in-shell format preserves ALA integrity fully. High-heat roasting begins lipid oxidation that degrades the ALA fraction.

Cardiovascular Health: LDL Reduction and Endothelial Function ▾

  • Walnuts have the most extensive cardiovascular research record of any tree nut. The PREDIMED trial, one of the largest nutrition trials ever conducted with over 7,000 participants, found that a Mediterranean diet supplemented with walnuts and other nuts significantly reduced the incidence of major cardiovascular events by approximately 30% compared to a low-fat control diet. The walnut component of that intervention specifically contributed ALA, polyphenols, and MUFA that each addressed cardiovascular risk through distinct mechanisms.
  • A 2018 meta-analysis of 26 controlled trials published in the American Journal of Clinical Nutrition found that walnut consumption significantly reduced total cholesterol, LDL cholesterol, and triglycerides compared to control diets, with no significant effect on HDL. The LDL reduction averaged approximately 9 mg/dL. That magnitude is clinically meaningful across a population. The mechanism involves both ALA-driven changes in lipid metabolism and the polyphenol compounds in walnut skins reducing LDL oxidation.
  • Walnuts also support endothelial function, the ability of arterial walls to dilate in response to blood flow signals. A 2012 randomized crossover trial found that consuming 56g of walnuts per day for 8 weeks significantly improved flow-mediated dilation (FMD), a key measure of endothelial health and an independent predictor of cardiovascular event risk. The improvement was attributable to ALA and arginine, an amino acid abundant in walnuts that serves as a precursor to nitric oxide, the molecule that triggers vascular smooth muscle relaxation.

Brain Health and Cognitive Function: The Most Studied Nut for the Brain ▾

  • The brain is approximately 60% fat by dry weight, and the quality of dietary fat directly influences neuronal membrane composition, nerve conduction velocity, and synaptic transmission efficiency. ALA from walnuts contributes to neuronal membrane integrity. Higher dietary ALA intake is associated in multiple epidemiological studies with slower cognitive decline, better memory retention in older adults, and reduced risk of depression.
  • A series of MRI studies found that walnut consumption activates the insula, the brain region associated with impulse control, interoception, and the ability to resist temptation. Participants who consumed walnuts showed stronger activation of this region when viewing high-calorie foods compared to control periods, suggesting walnuts specifically influence the neural circuitry involved in dietary self-regulation. This is a plausible mechanism for the observation that regular nut eaters tend to make better overall dietary choices.
  • A 2020 study in the American Journal of Clinical Nutrition found that consuming approximately 15% of daily calories from walnuts for 2 years was associated with improvements in cognitive composite scores in older adults at cardiovascular risk. The effect was most pronounced for memory and processing speed. While the research is not yet definitive enough to make specific cognitive claims, the direction and consistency of the evidence across multiple studies supports walnut consumption as part of a brain-healthy dietary pattern.

Gut Microbiome and Prebiotic Polyphenols ▾

  • Walnuts are rich in ellagitannins, a class of polyphenol compounds that are not well-absorbed in the small intestine and instead travel to the large intestine where gut bacteria metabolize them into urolithins. Urolithins are bioactive compounds with demonstrated anti-inflammatory activity, and emerging research suggests they have specific benefits for mitochondrial function, muscle health, and gut epithelial integrity. The conversion from ellagitannins to urolithins is entirely dependent on the composition of the individual's gut microbiome, which is why walnut polyphenol effects vary between people.
  • A 2018 randomized controlled trial published in the Journal of Nutrition found that consuming 2 oz of walnuts per day for 8 weeks significantly increased populations of beneficial gut bacteria including Ruminococcaceae, Bifidobacterium, and Lactobacillus compared to a matched control diet. These bacterial families are associated with improved gut barrier integrity, reduced systemic inflammation, and better immune function. The fiber in walnuts (2g per oz) acts as a prebiotic substrate for these bacteria, and the polyphenols provide a second, distinct gut-support mechanism through urolithin production.

Anti-Inflammatory Properties and Chronic Disease Risk ▾

  • Walnuts are one of the highest-antioxidant nuts available. The USDA ORAC database ranks walnuts among the top antioxidant foods in the entire whole-food category, not just among nuts. Their antioxidant load comes from ellagic acid, catechins, quercetin, and the vitamin E fraction (primarily gamma-tocopherol, which is more effective than alpha-tocopherol at neutralizing reactive nitrogen species). These compounds collectively reduce lipid peroxidation, lower levels of inflammatory markers including C-reactive protein (CRP) and interleukin-6, and protect cellular DNA from oxidative damage.
  • The raw format is specifically relevant here. High-temperature roasting of walnuts degrades a portion of the polyphenol content, particularly ellagitannins and catechins, which are heat-sensitive. Raw in-shell walnuts cracked immediately before consumption preserve the complete polyphenol profile. Studies that use roasted walnuts in clinical trials tend to show slightly smaller anti-inflammatory effects than studies using raw walnuts, which is consistent with the known heat sensitivity of walnut polyphenols.

Weight Management and Satiety: Why Walnuts Do Not Cause Weight Gain ▾

  • Walnuts are calorie-dense at 185 calories per ounce, which leads many people to avoid them when managing weight. This reasoning misses the satiety evidence. A 2019 randomized crossover trial published in Diabetes, Obesity and Metabolism found that consuming a walnut-rich smoothie daily for 5 days significantly reduced appetite, increased feelings of fullness, and suppressed hunger hormones including ghrelin compared to a calorie-matched control smoothie. The protein, fiber, and fat combination in walnuts collectively triggers satiety hormone release that reduces subsequent calorie intake.
  • There is also an incomplete calorie absorption effect in whole walnuts. A USDA-funded study found that people absorb approximately 21% fewer calories from walnuts than the nutrition label suggests, because the intact cell walls of whole walnuts resist complete enzymatic digestion and some fat passes through unabsorbed. The effective calorie load from in-shell walnuts cracked whole is lower than the label figure implies. The in-shell format specifically reinforces this: walnuts eaten whole immediately after cracking retain their cell wall integrity more than commercially pre-shelled halves that may have been through additional processing.
  • Long-term population data is consistent with this. A review of 20 prospective cohort studies published in BMJ Open found that higher nut consumption, including walnuts, was not associated with weight gain and was inversely associated with risk of obesity. People who eat walnuts regularly do not gain more weight than non-nut eaters, despite nuts' calorie density.

Blood Sugar and Metabolic Health ▾

  • Raw walnuts have a glycemic index near zero. With only 3.9g total carbohydrates per ounce (1.9g net after fiber), they produce no meaningful post-meal glucose response. Their fat, protein, and fiber combination slows gastric emptying and blunts any subsequent carbohydrate absorption from foods eaten alongside them. For people managing blood sugar through diet, raw walnuts are one of the most compatible snacks available.
  • A 2018 prospective study following over 3,000 participants for 5 years found that higher walnut consumption was associated with a 47% lower risk of developing type 2 diabetes compared to non-walnut eaters, after adjusting for confounders. The proposed mechanisms include ALA's effect on insulin signaling, polyphenol-driven improvements in insulin receptor sensitivity, and the direct blood-sugar-buffering effect of the fat-protein-fiber macronutrient combination. The evidence is associational rather than causal, but the direction and magnitude are consistent across multiple studies.

Male Reproductive Health and Sperm Quality ▾

  • A 2012 randomized controlled trial published in Biology of Reproduction specifically studied walnuts and male fertility. Men aged 21 to 35 who added 2.5 oz of walnuts per day to their existing diet for 12 weeks showed significant improvements in sperm vitality, motility, and morphology compared to the control group who avoided tree nuts. The researchers attributed the effect primarily to the ALA omega-3 content, which is directly incorporated into sperm cell membranes and affects their structural integrity and swimming efficiency.
  • Walnuts also contain arginine, the amino acid precursor to nitric oxide, and folate. Arginine supports blood flow to reproductive tissue. Folate is required for DNA synthesis in rapidly dividing cells including sperm. The combination of ALA, arginine, and folate in walnuts addresses male reproductive health through three independent nutritional pathways, making them one of the few whole foods with direct clinical evidence for sperm quality improvement.

Copper, Manganese, and Trace Mineral Support ▾

  • Walnuts provide approximately 50% of the daily value for copper per ounce and 43% DV for manganese per ounce. Copper is required for lysyl oxidase, the enzyme that crosslinks collagen and elastin in connective tissue and bone. It is also a cofactor in cytochrome c oxidase, the final enzyme in the mitochondrial electron transport chain and the one most directly responsible for cellular energy production. Low copper status is associated with cardiovascular dysfunction, poor bone quality, and impaired neurological function.
  • Manganese at 43% DV per ounce activates manganese superoxide dismutase (MnSOD), the primary antioxidant enzyme inside mitochondria. MnSOD is the cell's first and most important defense against free radical damage at the energy-production level. Walnuts are one of the most efficient dietary sources of both copper and manganese in whole-food form. Getting half the daily copper and nearly half the daily manganese from a 1 oz walnut serving is a meaningful contribution to trace mineral status that most everyday foods do not approach.

Why Raw In-Shell Is the Best Form for Maximum Nutritional Value ▾

  • Walnuts contain a higher proportion of polyunsaturated fat than any other common tree nut. Polyunsaturated fats, specifically the ALA omega-3 and linoleic acid in walnuts, are the most heat-sensitive and oxidation-prone fats in the food supply. Commercial roasting at 300 to 350°F for 15 to 20 minutes measurably reduces ALA content, degrades polyphenols, and begins generating small amounts of lipid oxidation products. These changes are not catastrophic in moderate amounts, but they are real and they reduce the nutritional potency of roasted walnuts compared to raw ones.
  • The in-shell format adds a second layer of protection beyond just being raw. The shell keeps oxygen away from the fat surface, prevents moisture loss that accelerates oxidation, and blocks UV exposure. A walnut cracked immediately before eating has been in an oxygen-free environment from the moment it left the tree until the moment you eat it. That freshness is measurable in flavor, measurable in fat profile quality, and consistent with the walnut nutrition data that clinical studies use, because most walnut research is conducted with raw, not roasted, walnuts. If you want the health benefits that the research documents, raw in-shell is the closest dietary equivalent to the form used in the trials.

Nutrition Facts and What They Actually Mean

Per 1 oz of shelled walnut meat (approximately 7 walnut halves, which is what you get from roughly 1.8 oz of in-shell walnuts before cracking). All values from USDA FoodData Central for raw English walnuts. This is the complete nutrition story for raw walnuts, including the nutrients most commonly overlooked in standard label discussions.

Nutrient Per 1 oz %DV
Calories 185 --
Total Fat 18.5g 24%
Saturated Fat 1.7g 9%
Monounsaturated Fat 2.5g --
ALA Omega-3 2.5g --
Trans Fat 0g 0%
Cholesterol 0mg 0%
Sodium 0.6mg 0%
Potassium 125mg 3%
Total Carbohydrate 3.9g 1%
Dietary Fiber 1.9g 7%
Total Sugars 0.7g --
Protein 4.3g 9%
Copper 0.45mg 50%
Manganese 1mg 43%
Magnesium 44mg 10%
Phosphorus 98mg 8%
Zinc 0.88mg 8%
Iron 0.82mg 5%
Folate (B9) 28 mcg 7%
Vitamin B6 0.15mg 9%
Calcium 28mg 2%
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Frequently Asked Questions

Approximately 9 oz of edible walnut meat from a 1 lb bag. The shell accounts for roughly 40 to 45% of the total weight of an in-shell walnut. One pound of in-shell walnuts contains approximately 30 to 35 whole walnuts depending on nut size, which yields about 60 to 70 walnut halves after cracking. Plan purchase quantities with this yield ratio in mind, especially if you are buying for baking where a recipe calls for shelled cup measurements.

A nutcracker is the most practical tool and is not included with this product. English walnuts have thinner, more uniform shells than black walnuts, which means a standard lever-style nutcracker works well without excessive force. Alternatives include a dedicated walnut cracker (a hinged clamp tool), two walnuts squeezed together in one hand (English walnuts are thin enough that this works), a wide flat mallet strike on a hard surface, or placing the walnut in the hinge of a car door and applying slow pressure. For high-volume cracking (baking projects), a dedicated bench-mounted nut cracker is the most efficient tool and preserves the most intact halves.

12 to 18 months at room temperature in the sealed bag or a cool, dry pantry. Up to 2 years refrigerated in an airtight container. Up to 3 years frozen. The shell itself handles most of the preservation by keeping oxygen away from the fat surface, preventing moisture loss, and blocking light. This longevity is the primary practical advantage of in-shell over pre-shelled walnuts, which begin quality decline within 3 to 6 months even in sealed packaging. Only crack what you plan to eat or use within a few days. Keep the rest sealed in the shell until needed.

Two separate causes. First, the thin papery skin (pellicle) covering the walnut meat contains tannins that are naturally somewhat astringent. This is normal and does not indicate anything wrong with the nut. The tannins are also where a significant portion of walnut polyphenols are concentrated, so the skin is nutritionally valuable even though it contributes slight bitterness. Second, and more commonly complained about, is oxidation. Rancid walnuts taste acutely bitter and unpleasant in a way that is distinct from normal tannin astringency. If your walnuts taste genuinely bitter rather than mildly astringent, oxidation is the likely cause. Fresh-cracked raw in-shell walnuts from this product should taste creamy, rich, and mildly earthy with only slight tannin bite from the skin. If they taste harshly bitter, contact us.

No. These walnuts are not treated with PPO (propylene oxide) or any other fumigation agent. PPO is used in some commercial nut processing as an antimicrobial treatment, but it leaves trace chemical residue and is prohibited under certified organic standards. Our raw in-shell walnuts meet clean production standards without fumigation treatment. The in-shell format also provides natural protection against the surface contamination that fumigation is designed to address, which means in-shell walnuts typically require less aggressive post-harvest treatment than pre-shelled versions.

Eat the skin. The thin brown papery layer (pellicle) covering walnut meat contains a significant portion of the nut's polyphenol antioxidants, including ellagitannins and catechins. Studies that specifically compare walnuts eaten with and without skin intact show higher antioxidant activity when the skin is included. The slight astringency from the tannins in the skin is normal and not harmful. Blanching walnuts to remove the skin (common in some cooking applications for texture reasons) does reduce the polyphenol content. For snacking and any application where the skin does not affect the final texture, eating walnuts with the skin on is the nutritionally superior choice.

One ounce per day is the dose used in the majority of clinical research on walnut health benefits, which works out to approximately 7 walnut halves or 14 walnut quarters. The 2020-2025 Dietary Guidelines for Americans recommend 5 oz of nuts, seeds, and soy products per week across all sources, which averages to just under 1 oz per day. Most walnut health studies that showed cardiovascular, cognitive, or anti-inflammatory benefits used between 1 and 2.5 oz per day. Going significantly above 2 oz daily adds calories without proportional additional benefit for most people.

Yes, and they are specifically better for baking than pre-shelled walnuts for any recipe where walnut flavor is a primary ingredient. Cracking walnuts immediately before adding them to batter preserves the volatile aromatic compounds that contribute to the rich, nutty flavor profile. Pre-shelled walnuts that have been sitting in a bag begin losing these volatile compounds from the moment the shell is cracked, which is why they often taste flat or slightly stale in baked goods compared to fresh-cracked walnuts. Banana bread, walnut brownies, date-walnut loaf, oatmeal walnut cookies, and any application where walnut flavor needs to come through clearly benefits from fresh-cracked in-shell walnuts. The extra 5 to 10 minutes of cracking time is worth it for those recipes.

These are English walnuts (Juglans regia), which is the standard walnut sold in grocery stores and used in commercial baking. English walnuts have thin, relatively uniform shells that crack cleanly with a standard nutcracker, yielding large intact halves. The flavor is mild, buttery, and slightly earthy. Black walnuts (Juglans nigra) are a native North American species with much thicker, extremely hard shells that require specialized cracking tools. Black walnut flavor is considerably more intense, bold, and pungent than English walnut. Most people find black walnuts too strongly flavored for everyday snacking but they have a dedicated following for use in certain traditional recipes. Unless a recipe specifically calls for black walnuts, English walnuts are the correct choice.

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