You"re officially on notice: Fiddlehead season is about to ramp up! Foragers already know that spring is the best time to find this delicacy in the wild. Fiddlehead fern fronds are one of the first fresh vegetables ready for the yearly harvest. Eaten in Europe, Asia, and North America for centuries, fiddleheads are not only tasty but are also nutritious: They"re a source of antioxidants and omega fatty acids, as well as iron and fiber. When cooked, fiddleheads are said to have a somewhat nutty, grassy flavor akin to a cross between spinach and asparagus.