Lets compare vitamin content per 1 kilogram of Boiled Japanese Chestnuts vs Roasted Japanese Chestnuts:
Roasted Japanese Chestnuts contain 3.6 times more Vitamin B1, 1.3 times more Vitamin B3, 6.2 times more Vitamin B5, 4.1 times more Vitamin B6, 3.5 times more Vitamin B9 and 2.9 times more Vitamin C than Boiled and Steamed Japanese Chestnuts.
Both Boiled and Steamed Japanese Chestnuts as well as Roasted Japanese Chestnuts have insufficient amounts of Vitamin A, Vitamin B12 and Vitamin D in 1 kg.
Comparing minerals per 1 kilogram for Boiled Japanese Chestnuts vs Roasted Japanese Chestnuts:
Boiled and Steamed Japanese Chestnuts have 1.7 times more Water than Roasted Japanese Chestnuts.
While Roasted Japanese Chestnuts contain 3.2 times more Calcium, 3.6 times more Copper, 4 times more Iron, 3.6 times more Magnesium, 3.6 times more Manganese, 3.6 times more Phosphorus, 3.6 times more Potassium, 3.8 times more Sodium and 3.6 times more Zinc than Boiled and Steamed Japanese Chestnuts.
Comparison of macro-nutrients per 1 kilogram:
Roasted Japanese Chestnuts contain 3.6 times more Energy, 4 times more Omega 3, 4.1 times more Omega 6, 3.6 times more Carbohydrate and 3.6 times more Protein than Boiled and Steamed Japanese Chestnuts.
Both Boiled and Steamed Japanese Chestnuts as well as Roasted Japanese Chestnuts have insufficient amounts of Fat, Cholesterol, Glucose and Sucrose in 1 kg.