Scotch Broth

Scotch broth is very much what you make it. But its quality does depend on obeying some simple rules. First, you must have lamb or mutton stock, so this is the ideal winter soup to make the day after you have had some roast lamb because you can use the bone to form the basis of the stock. Put your lamb bone to simmer in 4 to 5 pints (2.3–2.9