wash cucumber and onion and chop them into small pieces. Add required salt and set it aside in a bowl. Not to play bowling here lol (i added 3/4 tsp salt)..

In a blender , mix yogurt and coconut first, then add 1 tsp mustard seed (keep 1/2 tsp for later) and blend well. That is till its in a fine thick liquid form

Add above Mixture to the cucumber-onion mix and stir well. Then add few curry leaves and again stir. You can also add cillantro leaves here instead of curry leaves, but we get lots of curry leaves here , so we use it in everything.. my uncle even chew some for fun.. lol, yep, better than wasting it

In a small deep bottom frying pan, heat oil and pop mustard seed. Then add red chillies, after slicing them to 2 pieces each. Then add 3-4 curry leaves in it. Do not peep into it, it might just pop up on ur face. A permenant pimple mark is no fun.. haha

when its fried, add it to the cucumber and mix well. Our Cucumber pachadi is ready for serving.. Lets eat.. my favourite part of cooking ;)