Step 1: The first thing you must do is soak the lobhia in water over night or for 7-8hours. This will make the beans soft and manageable.
Step 2: Then, boil pre-soaked lobhia for 40 minutes or until very soft. Then, briefly boil tomatoes, peel off skin, and chop into large chunks.
Step 3: Heat oil in a kadai and add cumin and cinnamon. Soon after, add garlic and onions. Once the onions turn golden brown add khumbi and fry for 5 minutes.
Step 4: Add the tomatoes, coriander powder, cumin powder, turmeric powder, and cayenne. Cover and cook for 15 minutes, till the oil separates.
Step 5: Add the cooked lohbia to the above stir it to mix well and leave it covered for another 15 minutes.