"Converting plant energy into animal energy is wasteful: It takes about 7 pounds of edible, healthy grains to produce just 1 pound of beef, 4 pounds for a pound of pork, and 2 pounds for a pound of chicken. Reallocating land from animal to crop production would increase our food resources at least seventeen-fold: Crops like potatoes can produce 17 times the calories as animals on the same piece of land. There would be additional positive consequences of replacing animal foods in our diet with plants."
[http://www.drmcdougall.com/misc/2012nl/jul/lessons.htm]
It seems that the starch is the solution....
