Fungus Gravy
Steps
Melt the butter in a small saucepan.
Add the onion and mushrooms and fry gently until they are very well browned.
Dissolve the stock cube in the hot water and add to the saucepan.
Add the blended cornflour or bisto and heat , stirring constantly , until thickened and smooth.
Ingredients
unsalted butter, onion, mushroom, low-sodium bouillon cube, hot water, cornflour, salt and black pepper