To prepare a yogurt marinated salmon fillets dahi machhali masaledar recipe, first you need to prepare the marinade. First, you will need 1-2 tablespoons of yogurt. You can use plain yogurt or yoghurt that has been flavored with lemon or lime. Then, pour the yogurt over the salmon and let it marinate for at least 30 minutes. Now, add the mashed potatoes and cook them on medium heat until the potatoes are tender and the gravy thickens.