Vazhaikai Podi (to mix with rice)

You need raw green bananas to make this. There shouldn't be any hint of sweetness. 

You need 

2 raw green bananas

Dhania (coriander seeds)

Red chilies 

Chana dal

Salt

Tamarind (optional) (very little)

The ratio of Chana dal, dhaniya, red chilies is 1:1.5:1.5

You steam the bananas, peel them.

Roast the spices

Grind them with tamarind (I didn't use any cos it Tames the spiciness) 

Take it out and keep aside

Put the bananas in the mixer. 

Now put the spices you ground back in to the mixie and run it one more time.

Just garnish with curry leaves.

Mix with hot rice and eat.

Traditionally they powder this in an ammi (a stone grinder). It's obviously more tastier If hand pounded.