(Canh Chua) (www.geocities.com) Recipe: Vietnamese Fish Soup (Canh Ca Nau Dua) (www.recipehound.com) Recipe: Vietnamese vegetable sour soup [Canh Chua] (pwmf.blogspot.com) Rice paddy herb, flowering plant www.ruehlemanns.de Rice paddy herb is one of the many culinary herbs used ...