- Wash and soak 1 cup kerala matta rice. 
- Soak 10-12 red chilis also in the water. This will ensure smooth grinding of chilies. 
- In a separate bowl add 1/4 cup toor dal, ¼ cup chana dal, ¼ cup yellow moong dal and 2 tblsp urad dal. 
- Soak for 4 hours. 
- Drain the water and put the dal and rice into a mixie jar. 
- Add curry leaves, asafoetida and a small piece of ginger. 
- Grind everything together. 
- Transfer to a vessel. 
- 1 cup sliced small onions. You can add finely chopped big onions too. 
- Mix well. Adjust water to reach a right consistency. 
- Heat a pan. 
- Pour a ladle full of adai batter. 
- Spread on the tawa. 
- Put a hole in the center. 
- Cook on both sides. 
- Kerala matta rice adai ready. 
- Repeat this same for the rest of the batter. 
- This batter can be stored for a week in the refrigerator.