In a kadai, boil 3 cups of water. Then add 500 grams of gunda (after removing the seeds), add some salt, and boil the gunda on high flame for 5 minutes.
Remove the gunda from the water and let it cool down. Remove any remaining seeds and keep it aside.
In a mixer jar, add 3 tablespoons of roasted peanuts, 3 tablespoons of white sesame seeds, ¼ cup of gathiya, 2 tablespoons of cashews, 2 tablespoons of melon seeds, and ¼ cup of dry coconut. Grind it using pulse mode to make a coarse powder.
Transfer the ground powder to a mixing bowl. Add salt to taste, ¼ cup of poha, ½ cup of grated raw mango, 1 teaspoon of turmeric powder, 2 tablespoons of red chilli powder, 2 tablespoons of coriander powder, 1 teaspoon of cumin powder, 1 teaspoon of kitchen king masala, 2 tablespoons of jaggery, 3 tablespoons of oil, and some chopped coriander leaves. Mix well. The masala is ready.
In a pan, heat 5–6 tablespoons of oil. Add 1 teaspoon of mustard seeds, 1 teaspoon of cumin seeds, a pinch of hing, 1 inch of cinnamon stick, 2–3 cloves, 1 star anise, and 2–3 green cardamoms. Sauté briefly.
Add the gunda and fry on high flame for 2 minutes until a crispy coating forms.
In a mixer jar, add 1 onion, 2 green chillies, 1 inch of ginger, 6–7 garlic cloves, and a few curry leaves. Grind into a coarse paste without adding water.
Add the ground paste to the sabzi and sauté it. Then add ½ cup of tomato puree and salt to taste. Sauté again.
Add the prepared masala over the gunda. Do not mix. Cover the sabzi with a dish and pour some water on top of the dish. Cook the sabzi on low flame for 7–8 minutes.
Then remove the dish and mix the masala with the gunda.
Add 1.5 cups of buttermilk and mix well. Cook the sabzi on low flame for 2–3 minutes.
Finally, add 1 teaspoon of kasuri methi, some sesame seeds, and chopped coriander leaves. Mix well.
Gunda nu shak is ready. Serve it with jowar rotla or roti.