I made this a few days after Easter when I had leftover leg of lamb. Save the bones, along with the green part of the leeks to make lamb stock, if not beef stock can be substituted. It turned out really awesome and tastes even better the day after you make it. Really just add any veggies you like, my GF doesn't like onions (hence the leeks) but she loves mushrooms. This is hearty food for working class people, not fancy just good food for the gut. Simple and delicious.