Whole food · Vegetables and Vegetable Products
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Mountain yam (Hawaiian variety), when steamed, transforms into a delightfully soft, starchy, and slightly sweet cube with a neutral, comforting flavor. Its texture is uniquely smooth and almost creamy, yet it holds its shape well. Nutritionally, it's a lean, energy-dense carbohydrate source with minimal fat.
Calorie split: 8% protein · 91% carbs · 1% fat
↓ Full nutritionPeople love it for its mild, versatile flavor that acts as a perfect canvas for savory or sweet seasonings, and its satisfying, comforting texture. In many cultures, it's a beloved staple that evokes a sense of home cooking and nourishment.
Its high carbohydrate content can lead to blood sugar spikes if eaten alone, especially for those managing diabetes. To counteract this, always pair it with a source of protein (like beans or meat) or healthy fat (like a drizzle of olive oil) to slow digestion and stabilize glucose response. Practice portion control by filling only a quarter of your plate with it.
The Hawaiian variety of mountain yam, known as 'uhi', was historically so important that it was cultivated in terraced fields and even buried in pits for long-term storage, serving as a crucial famine food.
| Water | 77.1 g |
| Energy | 82.0 kcal |
| Energy | 343 kj |
| Protein | 1.7 g |
| Total lipid (fat) | 0.08 g |
| Ash | 1.1 g |
| Carbohydrate, by difference | 20.0 g |
| Calcium, Ca | 8.0 mg |
| Iron, Fe | 0.43 mg |
| Magnesium, Mg | 10.0 mg |
| Phosphorus, P | 40.0 mg |
| Potassium, K | 495 mg |
| Sodium, Na | 12.0 mg |
| Zinc, Zn | 0.32 mg |
| Copper, Cu | 0.13 mg |
| Manganese, Mn | 0.28 mg |
| Selenium, Se | 0.90 ug |
| Vitamin C, total ascorbic acid | 0.00 mg |
| Thiamin | 0.09 mg |
| Riboflavin | 0.01 mg |
| Niacin | 0.13 mg |
| Pantothenic acid | 0.48 mg |
| Vitamin B-6 | 0.21 mg |
| Folate, total | 12.0 ug |
| Folic acid | 0.00 ug |
| Folate, food | 12.0 ug |
| Folate, DFE | 12.0 ug |
| Vitamin B-12 | 0.00 ug |
| Vitamin A, RAE | 0.00 ug |
| Retinol | 0.00 ug |
| Vitamin A, IU | 0.00 iu |
| Vitamin D (D2 + D3), International Units | 0.00 iu |
| Vitamin D (D2 + D3) | 0.00 ug |
| Fatty acids, total saturated | 0.02 g |
| SFA 16:0 | 0.01 g |
| SFA 18:0 | 0.00 g |
| Fatty acids, total monounsaturated | 0.00 g |
| MUFA 18:1 | 0.00 g |
| Fatty acids, total polyunsaturated | 0.04 g |
| PUFA 18:2 | 0.03 g |
| PUFA 18:3 | 0.01 g |
| Fatty acids, total trans | 0.00 g |
| Cholesterol | 0.00 mg |
| Tryptophan | 0.01 g |
| Threonine | 0.06 g |
| Isoleucine | 0.06 g |
| Leucine | 0.11 g |
| Lysine | 0.07 g |
| Methionine | 0.02 g |
| Cystine | 0.02 g |
| Phenylalanine | 0.08 g |
| Tyrosine | 0.05 g |
| Valine | 0.07 g |
| Arginine | 0.14 g |
| Histidine | 0.04 g |
| Alanine | 0.07 g |
| Aspartic acid | 0.17 g |
| Glutamic acid | 0.20 g |
| Glycine | 0.06 g |
| Proline | 0.06 g |
| Serine | 0.09 g |
How does steaming affect its nutritional value compared to boiling?
Steaming is generally better for preserving water-soluble nutrients like potassium and vitamin C, as the yam isn't submerged in water. Both methods are healthy, but steaming may retain slightly more nutrients.
Is it the same as a regular sweet potato?
No. While both are tubers, mountain yam (Dioscorea spp.) is a true yam, distinct from sweet potatoes (Ipomoea batatas). It typically has a milder, less sweet flavor and a starchier, denser texture when cooked.
Can I eat the skin?
While the skin is edible and contains fiber, the Hawaiian variety often has a thicker, tougher skin that is usually peeled before cooking for a better texture.
NRF9.3 index — Fulgoni, Keast & Drewnowski, 2009. Computed from USDA nutrients.
Composite of energy density (Rolls et al., 1999), protein & fiber satiety, minus sugar. A calculated heuristic — ranks satiety-per-calorie, not a clinical measure.
Sodium-to-potassium ratio: 0.02 (lower is better — aim for ≤ 1)
Sodium:potassium per WHO potassium guidance. Computed from USDA nutrients.