Recipe Tips You can also use any other fish of your choice for this recipe. Share your version of this recipe Speaking of coconut fish curry, nothing beats the Kerala-style as it is all about the scrumptious combo of fish and coconut. How do you make coconut fish curry at home? Do share your version of the recipe with us. Frequently Asked Questions Can I use mustard oil for this recipe? Yes. You can use any cooking oil for this recipe. Since it is a Kerala-style recipe, we prefer using coconut oil. However, you can twist your recipe with a different oil. What can I add for the sourness if not tamarind? You can use kokum or white vinegar to add a dash of sourness to your fish curry.