Wash and soak little millet rice and blackgram in separate bowls for 4 hours.
After soaking, grind blackgram and little millet rice separately till it turns into smooth paste/ batter.
Mix both batter, add salt and baking soda into it. leave the batter for fermentation for about 4 hours.
Step 1: For filling
Take a medium sized pan and put the fresh grated coconut and jagger y.
Heat it on a low flame and stir fry for 4 to 5 minutes till it becomes little dry.
Add green cardamom and black-pepper powder and continue heating on low flame for another 2 minutes.
Put this mix aside in a bowl and let it cool.
Step 2: Pitha
Take one whole medium sized green turmeric leaf.
Put a little batter on the leaf and flatten the same.
Then put the required quantity of stuffing on the batter and fold the turmeric leaf across the lengthwise in such a way that the stuffing gets sandwiched.
Tie a thread around the folded leaf and ensure batter is not leaking.
Then steam it in an idly maker with turmeric leaf. Serve hot.