You can't save the whales by eating whales, but paradoxically, you can help save rare, domesticated foods by eating them. They're kept alive by gardeners who have a taste for them, and farmers who know they'll be able to sell them. The consumer becomes a link in this conservation chain by seeking out the places where heirloom vegetables are sold, taking them home, whacking them up with knives, and learning to incorporate their exceptional tastes into personal and family expectations.