Mushroom Sauce - cooking recipe

Ingredients

1/4 lb mushroom
1 teaspoon butter
1/4 teaspoon beef stock (powder)
1/2 teaspoon cornflour
1 pinch salt & pepper (optional)

Preparation

Cut mushrooms in slices.
In a small pot melt butter (medium to low heat) add mushrooms, stir and cover with lid, cook for 4-5 minutes (check that mushrooms are soft) add stock mixed in 1/2 cup of water, pepper and salt, take to boil, add cornflour mixed in 1/4 cup of water, stir until thick, remove from heat and serve on top of steak.