Cut cabbage in to very small pieces using a grater. Grind coconut, turmeric, onion, green chilli together. Add one table spoon of oil in to a frying pan ( Cheena chatti in malayalam) and  add mustard. When the mustard pops add urud dal . Then add cabbage and mix well. Add ground coconut masala  in to it and cover with the cabbage. Add curry leaf and salt to taste. Keep the pan covered  and cook in a low flame for 5 minutes. Stir well and serve hot.