Regarding your aside: Cattle are usually not fed broccoli and carrots, and I am fairly certain you can get loads of their food for the price of some fatty pork.

Regarding your aside: Cattle are usually not fed broccoli and carrots, and I am fairly certain you can get loads of their food for the price of some fatty pork. Even one of the higher-quality cereals, wheat, is sufficiently cheap that the price you pay for bread is almost entirely in manufacturing the bread and the various ingredients with less mass.