A substitute for rice ?

[cc]

Hi everybody,

It's a problem for those that live in gaikoku...but I don't know where to
ask.
You have probably heard about the lactofermentation of vegetables in "nuka"
(rice bran). Is it possible to do the same thing with bran from another
cereal ? My understanding is "nuka" is used only to stock the fermenting
bacteries, so wheat bran would do the same.
Anyone knows more ?
Has any of you (or your BYJWs) tried to use other ingredients more common
abroad to substitute komenuka ?

CC