more food for thought

In regards to the relative prices of restaurant food and locally sourced foodstuffs noted a couple of days ago, an important fact which I didn't notice being addressed is how much locally sourced foodstuffs are consumed at home. Much of the food we buy at the grocery store is not locally sourced, anyway. If we buy food from the grocery store that comes from the same place as food we eat at a restaurant, there is no difference in environmental effects in that respect. So eating at home might not be such a good way to be a good citizen as the article suggests.