Wash and peel the cucumber and chop it.
Heat the pan and add half cup of water,salt and cucumber pieces and cook till soft
Take a blender add coconut,ginger,mustard seeds,green chilly,turmeric powder,coriander powder and 2 tbsp water and make a fine paste.
Add this paste in the pan.
Add salt and mix well and cook for 4 - 5 mins and now add the hung curd and turn off the flame.
Serve with rice.