100gm Knorr Demi-Glace Brown Sauce Mix
1 can of Guinness Foreign Extra Stout (320ml)
Add the ingredients to a heavy-bottomed saucepan and mix for 5 minutes.
Bring the mixture to a boil with frequent stirring and simmer for 3 minutes.
Remove from the heat.
Use the sauce as it is or as a base for other sauces such as peppercorn or mushroom.