Sauerbraten

Ingredients

• One 4-lb. flat iron steak
• 1⁄2 tsp. kosher salt, plus more as needed
• 3⁄4 tsp. freshly ground black pepper
• 1 1⁄4 cups unsalted butter, lard, or vegetable oil, divided
• 2 carrots, diced (1 1/2 cups)
• 2 parsnips, diced (1 1/2 cups)
• 1⁄2 celery root, diced (1/2 cup)
• 1⁄2 cup tomato paste
• 1 (750-ml) bottle red wine
• 4 cups apple cider
• 4 cups beef or chicken stock
• 1 tbsp. apple cider vinegar
• 10 juniper berries
• 3 bay leaves
• 3 garlic cloves, peeled
• 1 cinnamon stick
• 1 sprig fresh thyme
• 1 cup all-purpose flour
• 1 bunch flat-leaf parsley