Take a saucepan with water and bring to a boil
When it starts to a rolling boil, add salt, 1/2 cup of rice.
Let it sit and start to boil, add rest by 1/2 cup, save 1/2 cup to be mixed later.
Using a rolling pin, start to mix well and let it get mixed well and cooked for 5 to 7 mins.
Simmer and cover with a lid, let it sit for 10 mins to cool down.
Meanwhile, grease a bowl with oil.
Once the dough cools down, transfer to the bowl, add onions, green chilies, coriander leaves, some rice flour.
Grease your palm and knead everything together to a firm dough.
If you need more flour to knead to a dry dough, add some more.
The dough should not stick to your palms.
Divide the dough into small balls.
Grease your palm and shape the balls into bowls.
Continue with the entire dough.
Heat a steamer or your idli steamer with water.
Once the water starts to boil, place the bowls on a greased plate.
Place the plate and steam for 10 to 15 minutes.
Once 15 minutes are done, open the lid and check if the kadubu is sticky or not.
If the steamed food is not sticky, it means the kadubu is cooked.
Allow it to stand for 5 minutes, then remove to the serving bowl and serve hot with spicy chutney.