Peel and chop raw mango. Adjust the mango according to its sourness.
Heat a pan and fry cumin and methi seeds without adding any oil. Add these to mortar pestle. Now add a teaspoon oil and fry red chili. Add fried chilli to mortar pestle.
Add all other chutney ingredients except spinach, mango and oil to mortar pestle and make it into a rough paste.
Now heat pan again, add remaining oil, chopped spinach and mango pieces. Let it cook on low flame for around 10 minutes until mangoes are cooked.
Now add this mixture to mortar pestle and crush it. All mango pieces should be mashed completely.
Empty everything into the bowl. Make tadka with all ingredients and add to this. Mix everything well and is ready to serve.