How to Break Up Petrified Brown Sugar

I bought a bag of Trader Joe's Brown Sugar (pictured is just the sugar, without the brown) and left it in the cupboard for a very long time. When I wanted to bake cookies last night the entire bag of brown sugar was solidified into the shape of the bag. Good thing Trader Joe tells you how to re-soften brown sugar. I had to use a hammer to break up the solid piece into small enough pieces to come out of the bag. The proper way to make petrified brown sugar soft again is to put the sugar in a large bowl and drape a wet kitchen towel over the bowl over night. It worked like German engineering!