Beef with brisket

3 lbs corned beef brisket , cubed 4 tablespoons olive oil 2 quarts beef broth salt & freshly ground black pepper, to taste 1 teaspoon dried oregano 1 teaspoon[...]

3-4 pounds beef brisket, rump roast or pot roast 1-2 each onions peeled, sliced 2-3 each potatoes peeled, sliced 2-3 each carrots peeled, sliced 1/2 cup water[...]