not in the food itself but in the embodied or life-cycle energy
people may consume more goods, but bulk food consumption stays the same
however, different foods may require more or less water or energy
- similar to examples for the embedded water in foods (see this link)
- energy in foods (about 10 * as much as nutritional)
- 68 kcal of fossil fuel energy to make 1 kcal worth of pork
- 35 kcal of fossil fuel energy to make 1 kcal worth of beef
- references - link
- high and low life cycle energy input for food can result in 5 fold difference
- animal products range over about 4 fold range, so the particular recommendation for saving energy needs to take that into account
- clams 27 MJ per portion, down to fresh cooked local cow at 3.2 MJ per portion
- 27 MJ = 6480 kCal of embodied or life-cycle energy
- these numbers are from a Swedish Life Cycle analysis of food (reference needed, link no longer works)
- including transportation
- Ecotrust calculations show that air transported fresh salmon costs 57 times more CO2 than frozen