Boil the potatoes,peel and chop into big pieces.
Peel or scrape the carrots and chop into thick long slices.
Wash,wipe,slit and make big pieces of green chilies
Boil enough water in a pan and when it start boiling then add the chopped carrots and boil for about 3 minutes.
Drain carrots and let them cool down completely.
In a big bowl add the boiled potatoes ,carrots ,green chili pieces and all the spices and mix well.
Fill the mixture in a glass jar and keep it covered for a day.
Next day heat the mustard oil to the smoking point.
Now let the oil cool down completely.
Pour the oil in the pickle jar and close the lid of the jar.
Keep the jar in sunlight for 3-4 days.
It will be ready to use after 3-4 days.
Stays good for minimum 1 month or till it last.