This chart shows the relationship between calories and price per serving for different sources of protein. Food portions may be relatively large and/or expensive to provide at least 30g of protein and 3g of leucine. In general, legumes cost less while fish and lean meats contain fewer calories.
The updated revision 1.1 now includes pork, grains, soy products, and a few other plant-based foods.
Cost per portion was calculated using January-February 2017 retail prices in Austin, Texas. Prices may vary in different locations, but the general relationships should hold true.
Responsibly produced foods are more expensive than conventional items. In this analysis the legumes are organic, most of the meats and poultry are raised ethically, and the fish is wild caught using ecological practices.
For further discussion please refer to this slide show.
