||This article does not cite any sources. (September 2015)
Ouu Khatta (Odia: ଓଉ ଖଟା) or Ou Tenga is a sweet and sour chutney made of elephant apple (ouu) Dillenia indica in jaggery in the Indian state of Odisha and Assam mostly in post monsoon season. Sometimes ouu is added to dal or dalma. It is rich in vitamin C.
According to popular Oriya legends Ouu plant was only found in Paradise. Goddess Parvati brought it to earth along with the Betel vine.
Variants and methods
As it is a sour fruit, it is cooked with jaggery or sugar. People who don't like sugar also prepare it with tangy mustard & garlic paste based gravy along with red chilli powder.