Ingredients

• 1.5 pounds (650 grams) center-cut tenderloin
• 1 pound (468 grams) mushrooms
• 2 finely chopped shallots
• 3 finely chopped cloves of garlic
• 2 tablespoons (30 milliliters) olive oil
• 3 tablespoons (44 milliliters) whiskey
• 2 fresh sprigs of thyme
• Salt and pepper
• Dijon mustard
• 3.5 tablespoons (51 grams) all-purpose flour
• 140 milliliters whole milk
• 1 egg
• Butter
• 6-7 slices of prosciutto
• Puff pastry
• 2 egg yolks
• Flaky salt