Wash and dry mangoes so that they are free from moisture.
Cut them into 4-6 pieces and let them dry over muslin cloth for 3-4 hours.
Now mix all spices just slightly pounded and spice powders along with salt.
Rub all the spices over mango pieces and place them in a glass jar. Cover it with muslin cloth and place it out in sun for 2 days.
Third day heat the mustard oil till smoke starts to emerge out of it. Switch off the heat and let the oil cool off completely.
Remove the muslin cloth and pour this oil over the pickle so that it completely covers the pickle.
Now close the jar with a lid and let the pickle stay out in the sun from 10-15 days for it to mature.