Irish Guinness Rarebit - cooking recipe

Ingredients

1/4 lb Mature cheddar cheese
1/2 teaspoon English mustard (bright yellow, very strong)
1/2 egg yolk
1 teaspoon Worcestershire sauce
2 tablespoons Guinness stout
salt and pepper
4 slices sourdough bread or 4 slices white baguette

Preparation

Mix together the cheese, mustard, 1/2 egg yolk, Worcestershire sauce, Guinness and salt and pepper.
Under the broiler, toast the slices of bread on one side.
Sprinkle the cheese mixture between each of the toasts on the un-toasted side.
Place under broiler for 2 - 3 minutes or until the cheese is melting, watching carefully. Serve immediately.