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Japanese royal fern, fiddleheads, fresh, boiled: Calories & Nutrition per 100 g (Japan's Official Food Table)

Last updated: 2026-09-17

Japanese royal fern, fiddleheads, fresh, boiled has 17 kcal per 100 g of edible portion, with 1.1 g protein, 0.4 g fat and 4.1 g carbohydrate, according to Japan's official Standard Tables of Food Composition.

Food number06121
Name in Japaneseぜんまい 生ぜんまい 若芽 ゆで
Food groupVegetables

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Nutrition per 100 g (edible portion)

Energy17 kcal
Water94.2 g
Protein1.1 g
Fat0.4 g
Carbohydrate (by difference)4.1 g
Dietary fibre3.5 g
Salt equivalent0 g
Sodium2 mg
Potassium38 mg
Calcium19 mg
Iron0.3 mg
Vitamin C2 mg
Cholesterol(0) mg

How to read these numbers

Other forms of japanese royal fern

Source: Ministry of Education, Culture, Sports, Science and Technology (MEXT), Standard Tables of Food Composition in Japan (Eighth Revised Edition), 2023 supplement; English food names from the official English edition (2015). Compiled and reformatted by this website. This page is general information, not dietary or medical advice.

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