4 tb Butter or margarine
4    Leeks; mostly white part
- chopped
1    Onion; chopped
4 c  Water
4 c  Chicken broth
2 1/2 tb Flour
Salt, white pepper
4    Potatoes; peeled and cubed
1 c  Whipping cream
2 c  Half and half
Chopped chives

Melt 1 tablespoon butter in large kettle, add leeks and onion and cook
until tender but not browned. Add water and broth and bring to boil. Knead
flour into remaining 3 tablespoons butter to form paste and stir into
boiling mixture with wire whisk to blend well. Season to taste with salt
and white pepper. Add potatoes, reduce heat and simmer until potatoes are
soft. Press through sieve. Cool. Add cream and half and half to soup, then
chill. Top each serving with sprinkling of chopped chives.