The Best Potato-Leek Soup Recipe

Ingredients

• tablespoons unsalted butter
• large leeks, white and pale green parts only, rinsed and roughly chopped
• quart homemade or store-bought low-sodium chicken stock
• medium russet potatoes, peeled and cut into quarters
• bay leaf
• Kosher salt and freshly ground black pepper
• buttermilk
• heavy cream
• teaspoon freshly ground nutmeg
• Sliced chives or scallions, for serving