You can avoid getting specialized brown sugar for yesterday’s drink recipe with this trick. All you need to do is take plain old granulated sugar and add molasses to it. The ratio is approximately 1 tbsp molasses to 1 cup of sugar for light brown sugar, and 2 tbsp molasses to 1 cup of sugar for dark brown sugar or packed brown sugar. Simply mix them together until the ingredients are well combined. This trick can of course be used in any recipe that requires brown sugar.