First take 250 grams of whey/ mattha in a vessel or bowl.
Take one whole red chily.
Put a spoon on the gas. Keep the flame on medium.
After this, pour one teaspoon mustard oil in a spoon.
When the oil is hot, break half teaspoon of cumin and one red chilli into it.
As soon as the cumin starts crackling, add a pinch ofasafoetida. Keep in mind cumin should properly crackle
After this, pour the tempering in the whey/ mattha, cover the vessel with a plate as soon as you add the tempering.
So that the fragrance of asafetida should remain in the whey liquid or mattha.
Remove the plate after 10 seconds.
When you have to eat whey, add black salt as per taste before adding it to the whey. If you add salt to the whey long before eating,the whey will turn sour.
Take the whey in a bowl and eat it with food, or you can also eat the whey separately.