| Some completely arbitrary choices for comparison that may or may not be representative: 90% Lean Beef: 798 calories per pound 80% Lean Beef: 1152 calories per pound Carrots: 186 calories per pound Potatoes: 354 calories per pound Using GP's numbers for gallons/pound: 90% Lean Beef: .994 calories per gallon 80% Lean Beef: 1.435 calories per gallon Carrots: .990 calories per gallon Potatoes: 1.883 calories per gallon Much closer than I was expecting. I was also not expecting numbers on the order of magnitude of one calorie per gallon... |
Soybeans have about 2000 calories / lb, based on the number Google gives me of 446 calories / 100g. A random website claims soybeans take 200 gallons of water to produce 1 lb, which comes out to about 10 calories / gallon.
That said, you can make huge gains just by switching from beef to pork or chicken. Pork uses about half the resources of beef, per pound, and chicken about a third. Eat your beefs for special occasions, eat chicken and pork if you want every-day meats.