Beef Goulash with Potatoes

Name: Beef Goulash with Potatoes
Ingredients: 2 pounds skirt steak, cut crosswise into 4-inch-long pieces; Coarse salt and freshly ground pepper; 1 tablespoon extra-virgin olive oil; 2 medium yellow onions, coarsely chopped; 2 tablespoons red-wine vinegar; ¼ cup tomato paste; 2 tablespoons sweet paprika, preferably Hungarian; 1 teaspoon caraway seeds; 4 cups low-sodium beef broth; 1 ½ pounds baby potatoes, halved; Sour cream and chopped fresh parsley, for serving