On Saturday, November 5, 2016 at 8:06:59 PM UTC-5, Dave Smith wrote:
>
> You can leave that same piece of bread in a sealed container and it will
> work for years and years. As you run out of brown sugar you can add more
> and that old piece of bread will keep working. I can't tell you how
> long I have had the same piece of bread in my Tupperware container, but
> it is likely close to 10 years.
>
>
It's the fact you are keeping that brown sugar tightly sealed
in a Tupperware container that is keeping it soft and not the
bread. I've never used bread in my container and it's as soft
as the day I put the brown sugar in there. Keeping it tightly
sealed and air out of the container is what does the trick.