I've tried looking for it but cannot find an online supplier for you.
However, I did find a recipe for it:
It doesn't seem too hard and sounds delicious.
My family on the mainland orders thing from Zippy's...it is kind of like a Denny's here on the Islands..I think they are 45.00 for 8 of them, but they are ono grinds! Aloha
have you tried to google it?