The Ultimate Beef Stroganoff Recipe

Ingredients (19)

• 2 (.25 ounce) packets unflavored powdered gelatin (about 5 teaspoons)
• 2 cups homemade or store-bought low-sodium chicken stock
• Kosher salt and freshly ground black pepper
• 2 tablespoons mild paprika
• 4 (1 1/2- to 2-inch thick) beef tenderloin steaks, 6 to 8 ounces each (see note)
• 3 tablespoons canola or vegetable oil
• 12 ounces button mushrooms, quartered
• 8 ounces peeled pearl onions (about 24 onions, see note)
• 3 tablespoons unsalted butter, divided
• 1 medium shallot, thinly sliced (about 1/4 cup)
• 4 sprigs fresh thyme
• 1 teaspoon soy sauce
• 2 teaspoons Worcestershire sauce
• 1 teaspoon Asian fish sauce
• 2 teaspoons Dijon mustard
• 1 cup dry white wine
• 1 cup sour cream, plus more for serving
• 1 pound dried egg noodles
• 1/4 cup minced fresh parsley leaves