Fiddleheads...
typically first appear each year in the early spring during April and May. Although the word fiddlehead could refer to any fern shoots, one variety, the ostrich fern, is considered the best tasting.

The tender little rolls of fern are harvested within an inch or two of the ground as soon as they appear. Fiddleheads are a rich, deep green color and are about 2 inches long and 1-1/2 inches in diameter. Their flavor is similar to a blend of asparagus, green bean and artichoke.