Roasted Sunflower Seeds have 17.1 times more energy per 100g than Fiddlehead Ferns. It has very high energy density when compared to other foods. Raw Fiddlehead Ferns having low energy density.
Nutrients data from USDA National Nutrient Database for Standard Reference by US Department of Agriculture, Agricultural Research Service, Nutrient Data Laboratory.
Recommended Dietary Allowances (RDA) compiled from U.S. Department of Health & Human Services , National Institutes of Health.