the onion and celery in butter for about 5 minutes, stirring occasionally.
Blend in the flour, stirring constantly, and heat until mixture bubbles.
milk and broth gradually, continuing to stir while bringing the mixture to a
boil. Cook 2 minutes while stirring until mixture turns into a white sauce.
pot off stove, and pour liquid into the peanut butter, mixing until smooth.
Return to saucepan, add salt, and heat. Soup is ready as soon as it is