Sun dry the mustard seeds and red chillies for at least two days. Keep this ready for pickling.

Wash and pat dry the mangoes using kitchen towel. Any moisture left out may reduce life of the pickle. So it is important to ensure that the mangoes are completely dry. Then cut them in to medium sized cubes discarding the seed.Take a dry storage jar and add layer of mango cubes and then a layer of salt. Repeat this process till you are done with all the mango cubes and salt. Closing the lid tightly, keep the jar aside for a week. During this period mango cubes would turn soft and ooze out lots of water.

Next you need to separate the salt water and mango cubes. Using a colander separate the salt water in a dry vessel, add one more cup of normal water to this. Heat this up and let it boil till it gets reduced to half. Before proceeding to next step, you should wait for this boiled salt water to cool down.

Take a mixer jar and ensure it's dry with no traces of water. Add sun dried red chillies, mustard seeds and powder them coarsely.

Next, add salt water in steps and grind again to obtain pickle sauce. You can repeat this process to end up with the pickle sauce of right consistency. Finally in a wide bowl combine pickle sauce with mango cubes.

Store this mango pickle in a clean, airtight storage jar. Let it rest for a week and then you can start using it.

The first word of caution while preparing pickle is all the utensils, spoon, knife, container, cutting board should be competely dry and moisture free. Even a bit of moisture may spoil pickle.

Pickling should be done as two days process. First day is for cutting mangoes and marinating them in salt. Also sun drying the spices can begin on this day.

Second day includes boiling salt water, cooling it down and preparing pickle sauce.

Once you start pickling process always use dry spoon to transfer mango cubes, pickle sauce etc. Do not use your hands in any case.

If handled properly this pickle can last for 2 to 3 months.

You can add little asafoetida and turmeric powder too when preparing pickle sauce.