Rice flour -- 1/2 cup + 1 tbsp (if required for batter while frying)
Water -- a little less than 1/2 cup
Shredded Coconut -- 1/4 cup
Shallots -- 2
Green Chillies -- 3-4
Fennel Seeds / Perumjeerakam -- 1 tsp
Curry leaves -- 1 spring
Chilly Powder -- 1 tsp
Turmeric Powder -- 1/4 tsp
Salt -- to taste
Clean the shell of the mussels and split open with a blunt knife without breaking the shell. Remove any hairy kind of material from it.Take 2-3 mussels out of the shell and keep aside.Grind the shallots, green chillies, fennel seeds, curry leaves and the shelled mussels along with a pinch of salt. Add coconut to the ground mixture and crush them. Just pulse in your mixer.
Boil the water and add the rice flour into it and keep stirring as you add the flour. Switch off the flame and let it cool a bit. Once you are able to touch it with your hands, knead into a smooth dough . Add the ground coconut mixture into the dough and mix well.Check for salt and add if required, but remember that the mussels are a bit salty. Instead of using rice flour, you can prepare the dough using raw rice. Soak half a cup of raw rice for a couple of hours and then grind into a fine paste adding minimum amount of water.Fill the flour mixture in each of the mussels, close them and tie it tight with a thread. Tying with the thread helps to keep the stuffing inside, without letting it move out when cooked. You can fill in more than what I have done and let the mussels be half open and then tie it. I reduced the filling in each as we concentrate more on the mussels than the stuffing, also the mussels were very small.
Mix the chilly powder, turmeric powder, salt and a tbsp of the left over flour mixture(if you have any) , or 1 tbsp of rice flour with water and make a thin paste.
Dip the mussels in the batter and deep fry in oil. Drain on to a kitchen towel and serve hot.