Impress your guests with this elegant and delicious salmon Wellington. This recipe features a salmon fillet wrapped in puff pastry, along with a flavorful mixture of spinach, mushrooms, and herbs. The pastry is baked until golden and crispy, while the salmon remains moist and tender. The combination of the flaky pastry, savory salmon, and earthy mushroom filling creates a show-stopping dish that is perfect for special occasions or holiday dinners. Serve with a side of roasted potatoes or a fresh salad for a complete meal.