What takes 25 calories to produce; and delivers one calorie when done?
If you owned a manufacturing company and it cost you $25.00 to produce an item that you sold for $1.00, how long would you stay in business? As per this, and other studies, it takes: 25 calories to produce 1 calorie of beef 15 calories to produce 1 calorie of pork 10 – 20 calories [...]