Mor Kali, also called Mor Koozhu, is a simple rice flour + buttermilk dish that is served as a breakfast or a tea-time snack in Tamil Nadu. This delicious dish is gluten-free. It is also low on potassium and sodium, making it suitable for people with poor kidney function or even renal failure. Note: Do read the recipe carefully for the instructions that ensure that this dish can be included in a renal failure diet or a low potassium diet.