Pork, Chestnut and Chorizo Stew

Name: Pork, Chestnut and Chorizo Stew
Prep time: 30 min
Cook time: 26 h 15 min
Total time: 26 h 15 min
Yield: 8 portions
Ingredients: 1000 g pork shoulder, boneless; 150 g onions; 300 g dry red wine; 2 bay leaves; 4 sprigs fresh thyme; 3 sprigs fresh rosemary; 1 celery stalk; 8 cloves; 6 garlic cloves; 12 black peppercorns; 1 Tbsp juniper berries; 5 Tbsp olive oil; 200 g chorizo; 1 Tbsp tomato purée; 2 tsp plain flour; 20 g dried porcini mushrooms; 100 g red vermouth; 350 g water; 1 beef stock cube (for 0.5 l); 1 tsp fine sea salt; ½ tsp ground black pepper; 70 g cooked, peeled chestnuts; 1 Tbsp unsalted butter; 200 g chestnut mushrooms