In 2008, a year of supposed 'food crisis', we grew enough food to feed 11 billion people. Most of it was not eaten by humans as food, however.

I realize that at a certain point if we're going to change our food system, it's going to be the next generation that's going to be critical. This generation is very interested in food issues, very concerned about things like animal welfare and the impact of the food system on the environment.

We're supposed to show people how the world is, to give them the tools they need to make good decisions as citizens or consumers. Depending on what your values are - the environment, your health, animal welfare - the answers are going to be different for every person.

The wonderful thing about food is you get three votes a day. Every one of them has the potential to change the world.

I really try to write as an ordinary person would, not as someone who's too sophisticated about food, or too knowledgeable about things.

Don't eat anything your great-grandmother wouldn't recognize as food. Don't eat anything with more than five ingredients, or ingredients you can't pronounce.

You are what what you eat eats.