Start by heating a large pot on the stovetop. Add the coconut oil and let it heat up.
Add the chopped onions, garlic and saute until the onions are translucent.
Add the tomatoes, whole cumin, and the spice powders. Saute until the tomatoes are soft.
Add ¾ cup of water and using an immersion blender/stick blender, blend the ingredients. The curry doesn't have to be a fine sauce, you can leave it slightly chunky.
Add the curry leaves and kokum, followed by the vinegar and cook on medium heat for 5-6 minutes.
Add coconut milk, followed by the shrimp.
Season with salt and simmer on low heat for 6-8 minutes. The prawns should be cooked in around 8 minutes. Overcooking the prawns will make the flesh tough.
Your authentic Goan prawn curry is now ready. Serve the curry over steaming hot rice.
