URMC / Encyclopedia / Content Search Encyclopedia Nutrition Facts Potatoes, au gratin, home-prepared from recipe using margarine, 1 cup Protein (g) 12.4 Total lipid (fat) (g) 18.6 Carbohydrate, by difference (g) 27.61 Energy (kcal) 323.4 Fiber, total dietary (g) 4.41 Calcium, Ca (mg) 291.55 Iron, Fe (mg) 1.57 Magnesium, Mg (mg) 49 Phosphorus, P (mg) 276.85 Potassium, K (mg) 970.2 Sodium, Na (mg) 1060.85 Zinc, Zn (mg) 1.69 Copper, Cu (mg) 0.39 Manganese, Mn (mg) 0.39 Selenium, Se (mcg) 6.62 Vitamin A, IU (IU) 686 Retinol (mcg) 147 Carotene, beta (mcg) 117.6 Vitamin C, total ascorbic acid (mg) 24.26 Thiamin (mg) 0.16 Riboflavin (mg) 0.28 Niacin (mg) 2.43 Pantothenic acid (mg) 0.95 Vitamin B-6 (mg) 0.43 Folate, total (mcg) 26.95 Vitamin B-12 (mcg) 0 Folic acid (mcg) 7.35 Folate, DFE (mcg_DFE) 31.85 Cholesterol (mg) 36.75 Fatty acids, total saturated (g) 8.65 Fatty acids, total monounsaturated (g) 6.34 Fatty acids, total polyunsaturated (g) 2.64