Cream of Fiddlehead Soup
   Contains shallots, leeks, heavy cream, egg, and chicken stock.
   http://www.recipesource.com/soups/soups/07/rec0750.html

Fiddlehead Fern Soup
   Lists chicken stock, milk, and lemon zest.
   http://www.norcliff.com/recipes/fern_soup.html