Ingredients for 4 servings

  • 800 g of beef (preferably rump steak)
  • 2 tablespoons of rapeseed or sunflower oil
  • 3 organic free-range egg yolks
  • 1 onion finely chopped or 2 small spring onions
  • 2 tablespoons of good quality cognac (optional)
  • 2 tablespoons of capers (preferably small ones)
  • 2 sprigs of flat parsley, chopped
  • 2 tablespoons of Worcestershire sauce
  • 1 teaspoon of tabasco
  • 1 tablespoon of ketchup
  • 1 tablespoon of strong white mustard
  • Juice of half a lemon
  • Salt and freshly ground pepper