This week we're Hungry In San Francisco...for Walnuts! First we head inland to Old Dog Ranch to learn how walnuts are grown and harvested. Then we're back in the city at Three Babes Bakeshop for a lesson in Salted Honey Walnut Pie. Finally, we lug those California walnuts back home to our Brooklyn kitchen for a savory walnut & basil pesto that's both easy and delicious.