Use 2 or 3 small ripe mangoes
Use 1/2 big or 1 small pineapple
Use 1/2 coconut grated
Use 2 dried red chillies
Use 1.5 tsp mustard
Use jaggery/gur to taste
Use 2 green chillies, chopped fine
Use salt to taste
Use curry leaves
Use oil for tempering
Peel and chop mangoes and pineapple into cubes. Add salt and gur to taste, add green chillies and mix all together.
Grind coconut and red chillies to a smooth paste, towards the end add 1 tsp mustard and grind. Add this masala to the mango+pinapple and mix. Add enough water to bring the gravy to desired thickness(usually like idli batter).
Make tadka of curry leaves and mustard and add to the sasam.