Heat oil in a pan, roast red chili, green chilies, curry leaves and cumin seeds until chilies change color.
Then add whole or crushed garlic, fenugreek powder, turmeric and salt. Mix well & saute until garlic is lightly roasted.
Add washed, sliced zucchini pieces and mix well until spices coat the pieces.
Add tamarind, cover and cook on medium flame until zucchini is soft. continue to cook until juices released evaporate.
Add cilantro, roasted sesame seeds, peanut powder and give a good stir. Let the mixture cool.
Transfer to a food processor, grind to a coarse paste. You can even make it a fine paste, depending on your preference.