Walnuts are the ones that are always left out. They don’t have a whole pie dedicated to them at Thanksgiving, they don’t supply millions of school children (and children at heart) with America’s favorite sandwich, they don’t even make milk (apparently even cashews do now!)! But they are one of my favorite nuts. Arguably the most delicate nut, buttery, with a light crunch and a hint of bitterness that rounds out any treat. I used to add them to my morning bowl of yogurt and berries every day, and still have a strong affinity for their papery skins and carefully-folded contours. So, when we visited friends in Paso Robles a…