Ingredients:

• 5 pounds russet potatoes, peeled and cut into 1/2-inch cubes
• 1 3/4 cups heavy cream
• 1/4 cup water
• 1 1/2 sticks (12 tablespoons, 6 ounces) unsalted butter, cut into 1/2-inch cubes
• 2 teaspoons kosher salt
• Chopped chives, to garnish (optional)