Hi all,
Mim's roots, thats an interesting one. I have heard of somthing called a breadfruit, though I believe its tropical so not too likely in Beleriand, and of course a fruit not a root. I guess potatoes can be 'floury' sometimes, but the usual view is that potatoes tomatoes tobacco etc were imported into Middle Earth from The West via Numenor. They could be swedes, turnips etc, or even some species which was unique to Beleriand and died with it.
Anyway I was reminded of the old coffee thread, see here...
coffee thread