Add 1/2 cup (100 ml) water and salt to taste. Cover with a lid and cook on a low to medium heat for 8 - 10 minutes or it is 3/4 done and gravy slightly thickens / tomatoes well blended.
At this point, add cashew nut paste and stir well gently. Do not add extra water. Cover again and cook a low heat for 5 minutes or until the gravy thickens.
Sprinkle chopped coriander leaves and serve hot.