Instructions

  1. Whisk together sour cream and flour.
  2. Put leeks in a heavy skillet with butter, 1/3 cup water, salt and pepper. Cover skillet with a tight fitting lid and simmer over medium heat, stirring once or twice, until leeks are tender, about 10 minutes.
  3. Stir in sour cream mixture and remaining 1/3 cup water.
  4. Season fish with salt and pepper and add to leeks and cook, covered, until just cooked through, 8 to 10 minutes.
  5. Serve sprinkled with dill.