Soak rice and methi seeds for 5 hrs. Drain the water, add the sprouted horse gram, and grind with fresh water to pancake batter consistency. Add salt and ferment overnight.
In a pan, heat oil and season with mustard seeds, split urad dhal, cumin, asafoetida. Add the chopped ginger and garlic and saute for a minute. Then add the chopped kale and saute for about 3 min.
Cool the kale mixture and add it to the batter. Add the onions too and mix well.
Heat the paniyaram pan. Add a drop of oil in each half-sphere and add about 1-2 tablespoon batter depending on how much the shape in the pan can hold. Drizzle oil and cook for a couple of minutes. Flip it over and cook the other side.
Paniyarams are ready to be served hot with chutney of your choice.