Hungarian Goulash

Name: Hungarian Goulash
Ingredients: 6 ounces thinly sliced bacon, chopped; 2 1/2 pound well-marbled boneless beef chuck, cut into 1 1/2-inch pieces; Kosher salt; Pepper; 2 onions, chopped; 1/4 cup Hungarian sweet paprika; 1 tablespoon tomato paste; 1/2 teaspoon caraway seeds; 2 tablespoons apple cider vinegar, divided; 1 1/2 pounds small Yukon Gold potatoes, cut into 1-inch pieces; 1 green bell pepper, chopped; 2 teaspoons fish sauce, optional; Sour cream and toasted rye bread, for serving