Beef Wellington with Mashed Potatoes, Steamed Carrots and Madeira Sauce

Name: Beef Wellington with Mashed Potatoes, Steamed Carrots and Madeira Sauce
Prep time: 1 h 40 min
Cook time: 3 h 40 min
Total time: 3 h 40 min
Yield: 4 portions
Ingredients: 10 g dried porcini mushrooms; 150 g boiling water; 1 Tbsp vegetable oil; 500 - 700 g beef fillet; ½ - 1 tsp fine sea salt; 300 g fresh button mushrooms; 2 shallots; 50 g unsalted butter; 3 - 4 sprigs fresh thyme; 120 g Madeira wine, dry or sweet; ½ - 1 tsp fine sea salt; 1 tsp ground black pepper; 360 g puff pastry, ready-made; 1 egg; 500 g water; 600 g carrots; 350 g milk; 1000 g potatoes; 1 tsp fine sea salt; 25 g unsalted butter; 50 g Madeira wine, dry or sweet; ground black pepper