The absolute BEST Guinness Crock Pot Corned Beef & Cabbage with Guinness Reduction Sauce
With regards to the brown sugar, keep in mind that reducing the Guinness will render the sauce sweet however I still add up to the last 1/4 cup of brown sugar personally as I found it was a tad ‘bitter’ without it. My advice is to start off with 1 tablespoon of brown sugar, taste the sauce as it reduces and add more if necessary.