Cook onions in 2 tablespoon butter until golden. Pound steak to tenderize and sear over high heat in butter & onion, about 2 min on each side. Add sherry, A-1, 2 tablespoon butter, Worcestershire, chives, parsley, pepper and salt. Reduce heat to med and cook for 3-4 mins per side. Add brandy, bring to the table, flame and serve.