intensively produced, and that means using fuel – in practice, a pound of organic lettuce, grown without synthetic fertilisers or pesticides in California, and containing eighty calories, requires 4,600 fossil-fuel calories to get it to a customer’s plate in a city restaurant: planting, weeding, harvesting, refrigerating, washing, processing and transporting all use fossil fuel. A conventional lettuce requires about 4,800 calories. The difference is trivial.
