Cook mango with green chilly, ginger, salt and turmeric powder.
:- Do not overcook.
Mix coconut powder and yoghurt in a bowl.
Pour it into the cooked mango, stirr under low flame for 2 mins. Switch off the flame.
Heat the oil in a tawa.
Splutter mustard seeds and add fenugreek and saute until brown.
Add chopped small onion, garlic, broken red chillies and curry leaves.
Saute until the onion gets its well-known colour and aroma.
Pour this over the mango.
:- You may need to adjust salt according to the sourness of mango and yoghurt.