Wash the mangoes and peel the skin of the mangoes and then cut them into medium-sized pieces.
Combine the mango pieces with salt and turmeric powder and leave aside overnight or 10 hours.
After a day, mango pieces released some water and completely marinated.
Then sieve water from mango pieces and dry them on muslin cloth for 4-5 hours or till it becomes completely dry.
For pickle masala, add coriander seeds, split mustard seeds, split fenugreek seeds, fennel seeds, cloves, black pepper and asafetida in the center.
Now heat the oil and allow it to cool for some time. Then add to the masala and cover masala with another plate.
Then add turmeric powder and mix well. When the mixture is completely cooled down add salt and red chilli powder. Mix well. Pickle masala is ready.
In a large vessel, add grated jaggery, pickle masala and mango pieces. Mix well
Wrap the vessel with muslin cloth and tie it.
Keep the covered vessel on the kitchen platform for about 4-6 days or until the jaggery melts and reaches a double-string consistency.