Ingredients
Onion - 1 big
Tomatoes - 2 medium
Tamrind Paste - 1/2 tbsp
Salt - To taste
Asafodeita - 1 pinch
Oil - 3 tbsp
Mint Leaves - 2 cups
To Temper:
Mustard Seeds - 1/2 tsp
Urad Dal - 1 tbsp

Method
Heat oil and add onions to it saute the onion till glassy. Add the tomatoes to it. Add mint leaves and tamrind. Keep stirring till the mint leaves shrink. Add salt and grind to a nice paste.

Temper it with mustard seeds and Urad dal.