Check Out The New Recipe From archanaskitchen.com . Oats Mor Kali or Oats Buttermilk Porridge is a traditional South Indian dish that originates from Tamil Nadu, which is generally prepared using buttermilk, with rice flour as the base. Tasty, nutritious and easy to digest, the dish resembles sooji and makes for a very healthy breakfast option. In this recipe, instead of the rice flour, oats has been used as the base which takes the nutrient quotient up a notch. Learn how to make tangy and tasty Oats Mor Kali by following the recipe below.