Cook dal with 1/2 cup of water. Don't overcook.(just one whistle in pressure cooker) Meanwhile, chop Cabbage very fine. Mince garlic and Green chilly together.Shred coconut and mix with minced garlic, green chilly and turmeric. Heat oil in a pan and add mustard seeds and urid dal. When mustard seeds crackle, add curry leaves and fry for a few seconds. Add cabbage to pan and cook on medium heat for 5-10 minutes. When almost done, add salt,dal and coconut-mix and mix well and cook till cabbage is done. Serve with rice.