Add all your ingredients into a sauce pot. Make it one of the big ones you make soups in- cranberries really can swell up and you do not want an overflow.
Bring pot to a boil then down to simmer, stirring on occasion, for about 20 minutes.
Once your 20 min are up, take off heat source to cool down. Honestly this is the best part- we were all surrounded by the pot dipping in spoons and it is SO delicious warm! I put mine on some apple pie, which really isn't the goal of cranberry sauce, but lets just say YUM.
Tip: You do not have to use the Welches Blackberry sauce but the Cranberry, Blueberry and Blackberry together were fantastic. I would recommend picking this one up! Its a really thick robust flavor.