Scotch Leek Soup.
You make this soup to most advantage the day after a leg of mutton has been boiled, into the liquor from which put four large leeks, cut in pieces. Season with pepper and salt, and let it boil gently for a quarter of an hour. Mix half a pint of oatmeal with cold water till quite smooth; pour this into the soup; let it simmer gently half an hour longer; and serve it up.