Take 1 kg black urad dal, check if there is any speck remove it in case if you find it.
Pick out and remove the specks.
Now to a huge thick bottomed kadai add it and dry roast until nice aroma comes.
Do not over roast it else it will taste bitter. Transfer to a plate, set aside to cool down.
Add 1 cup raw rice and dry roast it.
Dry roast until it puffs up like this.
Transfer to a plate, cool down completely.
Transfer to a mixer jar.
Grind it as fine as possible.
See how fine it is. Keep scraping while grinding.
It was fine but still I sieved it.
Transfer to a sieve.
Sieve it well. Discard the remains else grind it with next batch.
Sieve it well.
Kali maavu is ready! Cool down.
Transfer to a clean dry container and store. Keeps well in room temperature for 3 months at least. Use clean dry ladle while scooping.
You can make ulundu kali, kanji etc using this powder.