Possible Clues:

• “Roast very rare. Allow to cool and roll into pie crust ... Slice in portions and serve with sauce Madire” (part of the earliest OED citation for this dish)
• Tenderloin fillet, covered with pâté or mustard, chopped mushrooms and Parma ham, wrapped in puff pastry
• Dish of stuff finally brimming over, clutched by old cook