Wash thoroughly raw tamarind and green chillies. Peel the skin of garlic and keep aside. Heat 2 tbsp of oil in a kadai, add raw tamarind. Fry them till they become soft. It won't take much time as they are very tender. Keep them aside.Again heat 2 tbsp of oil and add green chillies. Fry them till they become soft. Add garlic to them. Combine all of them and grind them to make chutney.