POTAGE PARMENTIER [Leek or Onion and Potato Soup]
Leek and potato soup smells good, tastes good, and is simplicity itself to make. It is also versatile as a soup base; add water cress and you have a water-cress soup, or stir in cream and chill it for a vichyssoise. To change the formula a bit, add carrots, string beans, cauliflower, broccoli, or anything else you think would go with it, and vary the proportions as you wish.