Fiddlehead ferns are the young, coiled fronds of certain fern species, particularly Matteuccia struthiopteris, commonly known as ostrich fern. They typically emerge in early spring and are characterized by their tightly curled shape, resembling the scroll of a violin, which is how they get their name. Fiddleheads are often found in moist, shaded areas and are a sign of the changing seasons. These ferns are edible and are considered a delicacy in various cuisines. They are rich in nutrients, including vitamins A and C, and are often prepared by steaming or sautéing. However, it is important to cook fiddleheads before consumption, as raw fiddleheads can be toxic.