First Wash and dry mangoes properly.

Then cut into small pieces. Add salt in it.keep aside for 2 hours.

Then dry them in a sunlight.

When they dry and mix both chillies in it and add the remaining water in it.

Mix properly add 1 pinch of sodium benzoate in it to avoid spoiling it.

Keep in a glass jar. It prepared in 6-8 days. Eat with mathri parantha etc.