Bechamel Sauce

Ingredients

• 1 1/2 cups chicken stock
• 1 celery stalk,chopped
• 1 small carrot,chopped
• 1/2 small onion, chopped
• 1 small bay leaf
• sprig of parsley
• 6 peppercorns, crushed
• 1/4 cup butter
• 1/4 cup flour
• 1 cup milk OR 1/2 cup milk+
• 1/2 cup cream
• salt and pepper to taste