Nuts, chestnuts, japanese, roasted
Whole food · Nut and Seed Products
Photo: Wikipedia
Japanese chestnuts, known as kuri, are roasted to bring out a sweet, starchy interior with a subtly smoky, caramelized flavor and a tender, slightly crumbly texture. Unlike many nuts, they are remarkably low in fat and high in complex carbohydrates, offering a satisfying, energy-dense snack. Their natural sweetness intensifies with roasting, making them a beloved seasonal treat.
Calorie split: 6% protein · 90% carbs · 4% fat
↓ Full nutrition💚 Why it's loved
People adore roasted Japanese chestnuts for their warm, comforting sweetness and the nostalgic ritual of peeling them from their spiky shells. They are incredibly versatile, enjoyed as a standalone snack, incorporated into both sweet and savory dishes, or even ground into flour for traditional confections.
⚠️ Watch-outs & how to enjoy it better
Due to their high carbohydrate content, they can cause a rapid rise in blood sugar, making portion control important for those managing diabetes. They also contain oxalates, which may be a concern for individuals prone to certain types of kidney stones. To counteract blood sugar spikes, pair them with a source of protein or healthy fat, like a handful of almonds or a dollop of yogurt.
Key benefits
- Rich in complex carbohydrates for sustained energy
- Very low in fat, making it a heart-healthy snack
- Good source of vitamin C, unusual for a starchy food
- Contains minerals like manganese and potassium
- Naturally gluten-free and low in sodium
🍽️ Popular dishes
🌍 Where it's eaten
💡 Did you know?
The Japanese chestnut tree (Castanea crenata) is a different species from the American or European chestnut and is prized for its large, sweet nuts and resistance to the chestnut blight disease.
Full nutrition (USDA data · scales with serving)
| Water | 49.9 g |
| Energy | 201 kcal |
| Energy | 841 kj |
| Protein | 3.0 g |
| Total lipid (fat) | 0.80 g |
| Ash | 1.2 g |
| Carbohydrate, by difference | 45.1 g |
| Calcium, Ca | 35.0 mg |
| Iron, Fe | 2.1 mg |
| Magnesium, Mg | 64.0 mg |
| Phosphorus, P | 93.0 mg |
| Potassium, K | 427 mg |
| Sodium, Na | 19.0 mg |
| Zinc, Zn | 1.4 mg |
| Copper, Cu | 0.73 mg |
| Manganese, Mn | 2.1 mg |
| Vitamin C, total ascorbic acid | 28.0 mg |
| Thiamin | 0.45 mg |
| Niacin | 0.70 mg |
| Pantothenic acid | 0.47 mg |
| Vitamin B-6 | 0.42 mg |
| Folate, total | 59.0 ug |
| Folic acid | 0.00 ug |
| Folate, food | 59.0 ug |
| Folate, DFE | 59.0 ug |
| Vitamin B-12 | 0.00 ug |
| Vitamin A, RAE | 4.0 ug |
| Retinol | 0.00 ug |
| Vitamin A, IU | 74.0 iu |
| Vitamin D (D2 + D3), International Units | 0.00 iu |
| Vitamin D (D2 + D3) | 0.00 ug |
Fat & fatty acid profile (per 100g)
| Fatty acids, total saturated | 0.12 g |
| SFA 16:0 | 0.11 g |
| SFA 18:0 | 0.01 g |
| Fatty acids, total monounsaturated | 0.42 g |
| MUFA 16:1 | 0.01 g |
| MUFA 18:1 | 0.40 g |
| MUFA 20:1 | 0.01 g |
| Fatty acids, total polyunsaturated | 0.21 g |
| PUFA 18:2 | 0.19 g |
| PUFA 18:3 | 0.02 g |
| Cholesterol | 0.00 mg |
Amino acid profile (per 100g)
| Tryptophan | 0.04 g |
| Threonine | 0.12 g |
| Isoleucine | 0.15 g |
| Leucine | 0.18 g |
| Lysine | 0.19 g |
| Methionine | 0.07 g |
| Cystine | 0.09 g |
| Phenylalanine | 0.12 g |
| Tyrosine | 0.09 g |
| Valine | 0.18 g |
| Arginine | 0.20 g |
| Histidine | 0.07 g |
| Alanine | 0.27 g |
| Aspartic acid | 0.63 g |
| Glutamic acid | 0.57 g |
| Glycine | 0.15 g |
| Proline | 0.18 g |
| Serine | 0.14 g |
FAQ
Are roasted Japanese chestnuts a good source of protein?
No, they are relatively low in protein (about 3g per 100g) and are primarily valued for their carbohydrate content and unique flavor.
How should I store roasted chestnuts?
Store them in an airtight container in the refrigerator for up to 5 days. For longer storage, freeze the peeled or unpeeled nuts for up to 3 months.
What's the difference between Japanese chestnuts and other varieties?
Japanese chestnuts are generally larger, sweeter, and have a starchier texture compared to the slightly more tannic European or smaller American varieties, making them ideal for both roasting and confections.
Nutrient density (calculated · NRF9.3)
Nutrient Rich Foods index: beneficial nutrients (protein, fiber, vitamins, minerals) minus saturated fat, added sugar & sodium, per 100 kcal.
NRF9.3 index — Fulgoni, Keast & Drewnowski, 2009. Computed from USDA nutrients.
Weight-loss friendliness (composite index)
Energy density 2.01 kcal/g · 6% calories from protein · 0.0 g fiber · 0.0 g sugar per 100 g.
Composite of energy density (Rolls et al., 1999), protein & fiber satiety, minus sugar. A calculated heuristic — ranks satiety-per-calorie, not a clinical measure.
Dietary load (calculated from USDA values)
Potential renal acid load. Positive = acid-forming, negative = alkaline-forming.
Sodium-to-potassium ratio: 0.04 (lower is better — aim for ≤ 1)
Sodium:potassium per WHO potassium guidance. Computed from USDA nutrients.