This is great use of leftover Roast. In large pot add oil, onions, chestnuts and 1/4 of the chopped carrot- cook on med heat until onion becomes soft- add broth and beef- use as much or as little as you wish Bring to boil- Now add potato and carrot- again bring to boil . now add corn and beans. Turn back heat to a simmer- cover and allow everything to cook together for 30 mins up to 1 1/2 hrs. Salt / pepper to taste When serving top with fresh Parsley- Enjoy