Individual Beef Wellington

INGREDIENTS

• 4 (6-ounce) thickly cut filet mignons
• 1 teaspoon salt
• ½ teaspoon freshly ground black pepper
• 1 tablespoon olive oil
• 4 (1-ounce) slices goose or duck liver, or pork country-style pate
• One-half (17 1/4-ounce package) frozen puff pastry (1 sheet), thawed
• Mushroom Duxelles, recipe follows
• 1 large egg beaten with 2 teaspoons water to make an egg wash
• :
• 1 tablespoon unsalted butter
• 2 tablespoons minced shallots
• ½ teaspoon minced garlic
• 10 ounces button mushrooms, wiped clean, stemmed, and finely chopped
• ¼ teaspoon salt
• 1/8 teaspoon freshly ground white pepper
• 2½ tablespoons dry white wine