Wikipedia:Articles for deletion/Rumbledethumps
I'm not aware of any specific policies that cover obscure ethnic foods, but there seem to be enough results on http://books.google.com/books?&q=%22Rumbledethumps Google Books and http://news.google.com/archivesearch?q=%22Rumbledethumps&cf=all Google News to satisfy 
— NONE, NONE
Stance: keep
Cited policy: WP:GNG (Wikipedia:Notability)