BUTTERMILK CABBAGE SOUP WITH BLACK WALNUT "PESTO"

Steps:

• Prepare the pesto:
• In a small heavy skillet over medium heat, toast the black walnut pieces, shaking the pan, until they just begin to turn golden, about 3 minutes. Be careful not to burn them.
• Put the toasted walnuts in a blender, add the cider and a large pinch of salt, and pulse until a loose, grainy paste is formed. Remove the pesto from the blender and set it aside.
• Make the soup:
• Split the cabbage in half, remove the core, and cut each half into 4 wedges. Slice the wedges into thin strips.
• Melt the butter in a Dutch oven over medium heat, and sauté the onion until it just begins to soften, about 4 minutes. Add the cabbage and a few pinches of salt, and stir well to coat with the butter.
• Add the broth and bring to a lively simmer. Cover and simmer for 10 minutes or until the cabbage is tender.
• Remove the pot from the heat and stir in the buttermilk. Return it to very low heat and warm it slowly, stirring as you do, so the buttermilk doesn't curdle.
• Serve the soup in individual bowls with a tablespoon of the black walnut pesto in the center of each serving. Pass the salt and pepper for additional seasoning.