For masala, make a fine paste of coconut gratings, mint leaves, coriander leaves, green chilli, cinnamon stick, onion. Keep this aside.
Heat a pressure cooker pan, add oil, sauté mustard seeds, add all the whole spices. Fry well. Add cashew, fry well till they are golden.
Add onion and fry till they become golden, add tomato, saute till it becomes mushy. Add ginger garlic paste, fry well. Add methi leaves and fry well.
Add the ground paste and fry well until raw smell vanishes. Add green beans and green chana / hara chana.
Fry well with the masala and add required quantity of water (water and rice in 2:1 ratio). Add soaked basamati rice, salt, lemon juice and bring it to boil.
Close the lid and pressure cook for 2 whistles. Switch off and let the pressure release naturally. Mix gently, serve hot hara bara veg pulao or green vegetable rice with any raita of choice.