First wash green chilli and keep aside till it is dry. Heat tawa or kadai. First dry roast the seasame seeds for few minutes. Don't burn it. Transfer to a plate to cool it. After cool it. Then add a little oil. Fry green chillies. When ever you frying green chilli break it and saute the green chilli. Otherwise it will burst it. Add cumin seeds and garlic cloves fry till the green chilli cooked well.

Transfer the dry mixture to the grinder. Add roasted seseame seeds. Add 1/2 tsp salt. No need of adding water. Grind it coarsely or make a paste. It is upto you. Once it is done.