In a bowl, mix together yogurt, besan, water, salt, turmeric powder, ginger, green chilies, garam masala powder, coriander powder and cumin powder. Keep aside.
Heat 1 tbsp. oil in a pan and fry the okra till light brown. keep aside. Heat remaining oil and temper with panch phoron, red chili and asafoetida.
Now pour the yogurt-besan mix and simmer on medium flame, stirring at intervals till it gets slightly thick.
Add the fried okra and simmer for another 2 minutes. Garnish with coriander leaves and serve with rice or chapati.