Broccoli Vichyssoise

Yield:	8 Servings
Categories:	Soups, Potatoes

4		Medium-size leeks (about 1 pound)
2	ts	Non-diet, tub style margarine
3 1/4	c	Chicken stock or broth (defatted), divided
3 1/2	c	Peeled and diced potatoes (1-1/2 pounds)
3	c	Broccoli florets
1/4	ts	White pepper
1 1/2	c	Whole milk
		Salt to taste
1	tb	Lemon juice
1		To 2 tsp. finely chopped chives for garnish (optional)