Reprinted from Artisanal Gluten-Free Cooking by Peter and Kelli Bronski. Copyright © 2009 Published by The Experiment. Featured on the January 30, 2010 episode
It takes 1 gallon of water to grow a single almond, according to Tom Philpott, food and agriculture correspondent for Mother Jones and author of "California Goes Nuts." Eighty percent of the world's almonds are grown in California, which is experiencing a severe drought.