1. In a saucepan put chicken broth, shallots, tarragon and celery; bring to a boil. Reduce heat, cover and simmer 45 minutes. Into blender container, ladle half of mixture; cover and at high speed, blend until smooth. Repeat with other half.
2. In a bowl beat the cream and yolks; stir into the soup. Reheat the soup, stirring, until the yolks are cooked. Do not let boil. Serve hot (it can also be served cold) garnished with chives and paprika.