Karimeen pollichathu is a dish of heavily seasoned cichlid fish that's been fried, enveloped in masala (a mixture of spices and fresh ingredients), and wrapped in banana leaves to make a packet and then shortly pan-fried or grilled. The dish comes from the Indian state Kerala, which is naturally so as the main ingredient, the green chromide (or pearl sport), a type of cichlid fish, is native to the region.
The preparation starts with shortly marinating the fish in a paste of spices, such as turmeric, chili powder, pepper, salt, and lime juice, and then shallow-frying it on both sides in coconut oil. While the fish marinates and fries, masala is prepared with fresh ingredients and spices, most commonly tomatoes, onions, ginger, garlic, curry leaves, green chili peppers, turmeric, and vinegar.