Farmer'S Vegetable Soup - cooking recipe

Ingredients

2 Tbsp. butter or olive oil
1 large chopped onion
2 bunches white part of the leeks, sliced
2 qt. chicken stock
3 medium potatoes
1/2 tsp. tarragon
1/2 c. chopped parsley
2 c. nonfat sour cream

Preparation

In pot, saute onion and leeks until limp.
Add stock, potatoes and tarragon.
Cover and simmer for 15 minutes.
Puree or mash with potato masher.