Oh I would love to know how to make it too! We go through loads of it at our place! I use it in most things that call for sugar or honey but like Jo, I love it for biscuits and slices - it creates a lovely texture.
I vaguely remember reading somewhere once the process of making it and it seemed quite complicated so I never really looked into it again. I would definitely make it if it was possible though. Sorry I am not more help!