Canh chua
Canh chua ( , "sour soup" , chữ nôm:羹䣷 ) or cá nấu ( "cooked fish" , chữ nôm:𩵜𤋷 ) is a Vietnamese sour soup indigenous to the Mekong Delta region of southern Vietnam . 
<triplet> Canh chua <subj> Vietnam <obj> country of origin <triplet> Mekong Delta <subj> Vietnam <obj> country