Take a medium sized Maldive Fish or Dried Tuna Fish 

Shred the dry fish into pieces. Remove the fish bones if any

Take the shredded fish in the blender

Add a tsp of Chilli Powder or more as per taste

Add 1/2 tsp Cumin Powder

Add 1/2 tsp Turmeric Powder

Grind the dry fish and the above mentioned ingredients in a blender for a few secs. 

After grinding, add a handful of small onions to the same blender and a handful of grated coconut. Now, blend this mixture again for few seconds

Now, take a pan, switch on the flame and add 5 tbsp Sesame Oil

Once the oil is heated add 300 gms small onions

Add Salt as per taste

Wait till the onions are brown and then add ground dry fish mixture

Mix it well and fry for 3-4 mins

Now its time to add lime juice as per taste

Fry for 2 more mins and your Masi Sambal is ready to be served