Wash the cabbage well and shred or cut it into very small pieces. Add some turmeic powder and salt with a little water and cook for a while (cabbage contains water so don't add too much).
Chop the garlic and green chillies. Then add shredded coconut,mustard powder, lime juice, curry powder, curry leaves and chop everything together using a food processor or a grinding pot. Add the coconut mix into the cabbage and stir well. When the coconut mix is cooked remove from fire.