STEWING: add 1 cup of Water/Stock, Sugar, Salt, and bring it to a boil. Add the Beef & Shrooms, then stew the sauce until the liquid reduces and thickens. After that, TURN off the heat, add about 30g of Parmesan, 1 Tbsp of Fresh Oregano and mix well. (I also added a handful of Mozzarella sometimes, to thicken the sauce)