Wash the raw mango, chop into bite sized pieces, set aside.
In a pan, dry roast fenugreek seeds and red chillies till golden brown.
Transfer it to a mixer.
Grind it to a semi coarse powder, set aside.
In a pan, heat oil – add mustard seeds let it splutter.
Add roasted powder, red chilli powder, hing and turmeric powder.
Give a quick mix and switch off.
Transfer this to the chopped raw mango pieces, add salt and mix well. Let it to rest.
Meanwhile we can prepare the jaggery syrup.
Add 1/8 cup of water to jaggery and heat it up until it nicely bubbles and is thick like honey in consistency. Strain to remove impurities.
Now to the thick jaggery syrup add the marinated raw mango pieces and heat it up until it is nicely coated. Switch it off immediately.
The mangoes get cooked easily so don't heat up for more time, just mix and switch off.
Serve Sweet Mango Pickle with curd rice!