Frozen Chopped Broccoli, Unprepared has 1.3 times more energy per unit of mass than Boiled and Drained Swiss Chard, which is very low in comparison to other foods. Boiled Swiss Chard having very 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.