Sur La Table Brown Sugar Saver 10103 Soften rock hard brown sugar with this ingenious ceramic disk It also keeps dried fruit, marshmallows, fruit cakes and cookies moist when they are kept in a sealed container To use, soak the disk in water for 15 minutes, pat dry and place in brown sugar When kept in a sealed container, this will keep brown sugar soft for up to 3 months When sugar begins to harden, re-soak, pat dry, and use again