Sweet Potato - 1cup
Onion - 1
Red chilli - 2
Urad Dal - 1tbsp
1.Cook the sweet potato and keep aside.
2.In a pan add little oil and fry the chilli and onion.
3.Then add the sweet potato and fry for 5mins.
4.Let it cool and then grind it to a smooth paste.Add salt.
5.In a pan add oil and then add mustard and urad dal and mix it in the grinded mixture.