Prepare the Vegetables: First, wash and wipe the green chillies. Slit them lengthwise and cut them into 1-inch pieces. Thinly slice all the onions lengthwise.
Sauté the Onions: Heat oil in a kadhai or pan on a medium-high flame. Once the oil is hot, add the sliced onions. Sauté them on high heat for just one minute. You don't need to brown them; just let them wilt slightly.
Cook the Chillies: Add the prepared green chillies to the pan and mix them well with the onions.
Add Spices: Stir in the turmeric powder and salt to taste. Give everything a good mix.
Steam: Reduce the flame to low. Cover the pan with a tight-fitting lid and let the chillies cook for 5-7 minutes. It's a good idea to stir once in between to make sure nothing sticks to the bottom. This steaming process will soften the chillies and onions.
Add Coconut and Jaggery: Remove the lid and add the fresh grated coconut and the finely chopped jaggery. Mix well until the jaggery melts and coats the chillies.
Add Tanginess: Squeeze the juice of half a lemon all over the dish and stir to combine.
Final Steam: Cover the pan one last time and let it cook on low heat for 2-3 minutes. This helps all the flavours—spicy, sweet, and tangy—to blend together beautifully.
Serve: Turn off the heat. Your delicious Spicy Green Chilli Side Dish is ready to be served hot!