Foolproof Classic Beef Wellington Recipe - Chef YoYo

Ingredients

• lb Centre-cut Beef Fillet (Chateaubriand), trimmed
• Tbsp Olive Oil
• Tbsp Unsalted Butter (for searing)
• Coarse Sea Salt
• freshly cracked Black Pepper
• Tbsp English Mustard
• lb Mixed Mushrooms (Cremini, Shiitake, or Chestnut)
• Shallot, finely chopped
• Cloves Garlic, minced
• Sprigs Fresh Thyme, leaves only
• Tbsp Unsalted Butter (for duxelles)
• /4 cup Dry White Wine (Optional)
• –12 Thin Slices of Prosciutto or Parma Ham
• sheet (400g) Ready-made All-Butter Puff Pastry
• Large Egg Yolks, beaten with 1 tsp water (for egg wash)
• Flour, for dusting