Multigrain with YW rye levain and chestnut flour

I bought 5/500g bags of Italian Chestnut flour a number of years ago. Somehow I never found anything that I liked to use it in so it sat in the freezer in its vacuum packs waiting...and waiting..and....well you get the idea. I have been cleaning out and sorting and using up . I decided to only cook from my larder for 2014 , at least as much as possible.