Fern shoots help to relieve stress, boost endurance and metabolism, remove toxins. Fern is a natural source of iron. Eagle fern composition includes essential minerals, such as nickel, potassium, magnesium, copper, sulfur, phosphorus, sodium, manganese, calcium, iodine, selenium. Fiddleheads with vitamins A, B, E, nicotinic acid and flavonoids are very good for health. Composition: fern, table salt. Nutrition value (per 100 g.): protein – 4,5 g., fat – 0,4 g., carbohydrates – 5,5 g., energy – 34 Kcal. Shelf life: 1 year.