Ingredients: 1 cup beef stock or broth,2 tablespoons butter,1 carrot, peeled and chopped,1/2 cup cream, for a lighter version substitute vegetable or chicken broth,2 tablespoons sour cream or softened cream cheese,1 large egg yolk,2 tablespoons all-purpose flour,2 tablespoons chopped fresh parsley leaves,1 3/4 pounds ground beef or ground lamb,1 tablespoon extra-virgin olive oil, 1 turn of the pan,1 onion, chopped,1/2 cup frozen peas, a couple of handfuls,2 pounds potatoes, such as russet, peeled and cubed,Salt and freshly ground black pepper,1 teaspoon sweet paprika,2 teaspoons Worcestershire, eyeball it
Instructions: