Green Peas Skin Soup

6 teacups skin of green peas
1 tablespoon green peas
1 chopped onion
3 teacups skim milk
2 teaspoons butter
salt and pepper to taste

1. Heat the butter and fry the onion for 1 minute.
2. Add the green peas skin and green peas and cook for 3 to 4 minutes.
3. Add the milk and ½ teacup of water and cook in a pressure cooker till the first whistle.
4. Blend in a mixer.
5. Strain to separate the stock from the skin. Discard the skin.
6. Boil the stock for 1 minute.
7. Add salt and pepper.
Serve hot.