Edible parts
Nuts / seeds as sold
Nutrition per 100 g
Food data (CoFID / USDA). % NRV is UK where a reference exists. Curiosity about the plant — not a diary score.
| Nutrient | Per 100 g | % NRV (UK) |
|---|---|---|
| Energy | 2590 kJ / 619 kcal | 31% |
| Protein | 24.1 g | 48% |
| Carbohydrate | 9.6 g | 4% |
| Fibre | 6.8 g | — |
| Natural sugars | 1.1 g | — |
| Fat | 59 g | 84% |
| Omega-3 (ALA) | 3.3 g | — |
| Vitamin A | 2 µg RE | — |
| Vitamin C | 1.7 mg | 2% |
| Vitamin E | 2.1 mg | 18% |
| Vitamin K | 2.7 µg | 4% |
| Folate | 31 µg | 16% |
| Vitamin B6 | 0.58 mg | 41% |
| Calcium | 61 mg | 8% |
| Iron | 3.1 mg | 22% |
| Magnesium | 201 mg | 54% |
| Potassium | 523 mg | 26% |
| Zinc | 3.4 mg | 34% |
| Selenium | 17 µg | 31% |
| Sodium | 2 mg | — |
Per 100 g · CoFID / USDA · % NRV UK · not medical advice
Prep notes
Wilder than the English walnut: more protein, more iron, less omega-3, a harsher hull. The stained fingers are tannin. Crack them; the hull is not food.
Caution
Grocery / shop food data only. Not a wild forage guide. Thrive shows composition curiosity — not medical advice.
Answer-ready
Black walnut (Juglans nigra; SK Čierny orech) is listed in Thrive’s plant atlas under nut-seed. Nutrition below is per 100 g with % NRV (UK) where a reference exists — food data for curiosity, not a diary score or medical claim. Edible part covered here: Nuts / seeds as sold.