First wash and wipe mangoes.Then cut it inteo small square shapes. Heat a Kadhai add oil and add fengreek seeds and fry it on brown colour.keep it a side.when it cool crushed it roughly.in big size bowl add chilli powder, turmeric powder and salt and mix it

Then, add the crushed fenugreek, hing powder, sugar, and mustard powder to the bowl and mix well. Add the chopped mango to the spice mixture and coat the mango pieces thoroughly. Store the mixture in a jar. First, sprinkle some hing powder and masala mixture at the bottom of the jar, then add the masala-coated mango pieces. Pour oil over the mangoes, cover with a clean white cloth, and then seal the jar. Your mango pickle is ready. Enjoy!