SERVES 8
	2 leeks, white part only, cleaned and chopped finely
	2 tablespoons finely chopped shallots
	4 tablespoons unsalted butter , divided
	1 quart chicken stock or broth (or water)
	2 large Russet Potatoes, peeled and cut into 1-inch chunks
	2 tablespoons finely chopped celery
	1/2 cup whole milk
	1/2 cup light cream
	1 tablespoon kosher salt, plus more or less to taste
	1 teaspoon freshly ground black pepper, plus more or less to taste
	 
	Melt 2 tablespoons butter in a large pot over medium heat. Add leeks and shallot and cook until softened, about 7 minutes. Add stock, potatoes, and celery; bring to a boil, reduce to a simmer and cook 20-25 minutes or until potatoes are tender. Add milk and cream; cook for 10 minutes.
	Place soup into the pitcher of a blender, in batches, and puree until smooth. Stir in remaining 2 tablespoons butter, salt, and pepper, add more or less to taste; serve warm.