Bottle Gourd Kofta With Gravy

Name: Bottle Gourd Kofta With Gravy
Ingredients: FOR KOFTA:; 2 cups bottle gourd, grated; 3 onions, chopped; 1 inch ginger, finely chopped; 2 green chillies, finely chopped; 1 pinch baking soda; 3 teaspoons gram flour; 1/4 teaspoon red chilli powder; 1/2 cup coriander leaves, chopped; 1/2 no. potato, boiled and mashed; 4 teaspoons oil, for frying the kofta; FOR MAKING GRAVY:; 1/2 teaspoon whole cumin seed; 2 onions, roughly chopped; 2 tomatoes, chopped; 1 teaspoon ginger paste; 1/2 teaspoon garlic, chopped; 3 teaspoons cashew nut paste; 1 teaspoon poppy seed paste; 1 teaspoon cumin seed powder; 1/4 teaspoon termeric powder; 1 teaspoon chilli powder; 2 teaspoons corriander powder; 1/2 teaspoon garam masala powder; salt, to taste; 2 teaspoons oil; 1/2 cup low-fat milk