Ingredients:

• 1 1/2 to 2 pounds center-cut beef tenderloin (See Recipe Note)
• 1 teaspoon kosher salt
• Freshly ground black pepper
• 2 tablespoons vegetable oil, divided
• 2 tablespoons butter
• 1/2 cup tawny Port wine
• 4 to 5 medium cloves garlic
• 5 to 6 sprigs fresh thyme, plus extra to serve