* ½ pound (225g) of quality beef (filet mignon) with all connective tissue removed.
* One Egg yolk.
* One Teaspoon Worcestershire or Soy sauce.
* One Tablespoon whole grain mustard.
* 1-3 drops of hot pepper sauce, as desired.
* 2 Tablespoons of chopped onions.
* Salt and fresh ground pepper to taste.

===Method===
* Finely chop the beef, or run twice through a meat grinder with ¼ inch (0.75cm) plate.
* Mix all the ingredients loosely and spread on good quality bread slices to make open-faced sandwiches. The steak tartare may also be served on buttered toast.

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