Soak jaggery in 1 cup + 1/2 cup of hot water. Since I had big chunks of jaggery it took a while, but to speed up the process, jaggery can be cut into small pieces or cooked with water
After the jaggery completely melts in water, strain the impurities.
In a pan, add jaggery syrup and bring to boil. Add the coconut, black-eyed beans, and cardamom powder; mix well. Add the rice flour
Cook till it comes to a non-sticky dough consistency. Cover the dough with a damp cloth, as it tends to dry soon
When the dough is cool enough to handle, make small spheres, flatten it and gently make a small dent in the center. Since rice flour is gluten-free, they tend to be sticky, so greasing hand with sesame oil helps to make Adai
Steam in the greased plate for 10-12 minutes