Khatta meetha Chilli Achar

One of my  collegues brought this absolutely yummy khatta meetha chilli achar to work, which I couldn't have enough of. Unfortunately, someone had gifted the pickle to her, and she had no way of getting me the recipe. I browsed the internet till I found something that seemed like what I was looking for, and I tried it at once. It isn't quite what I had, but is lovely all the same, and I will definitely make it again.

15 green chillis, cut into inch long pieces
1 tbsp dried ginger powder
Salt to taste
1 tsp chilli powder
1 tsp dhania powder
100 gms jaggary
1/4 cup vinegar
1/2 cup mustard oil

Method:
Heat the oil, and saute the green chillis till soft
Add salt, chilli powder, dhania powder, ginger powder and fry for a few mins
Add jaggary and mix well till it melts (keep the flame low to ensure it doesn't burn)
Add vinegar and stir.
Turn off the heat, and mix the rest of the oil (pre-heated).
Store in a dry jar, and keep it in the sun for 4-5 days before using.